【０００１】[0001]
【発明の属する技術分野】本発明は、主として広域土地
造成を対象とした盛土転圧管理システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embankment compaction management system mainly for wide-area land development.
【０００２】[0002]
【従来の技術】土地造成工事においては、どのような盛
土材料を用いてどのように締固めを行うかが重要であ
り、よく締まって密な構造になっている土は、外力に対
する抵抗が大きく、より高い安定性を保つ。したがっ
て、撒き出された盛土材料は、締め固め用の機械で十分
に締め固めなければならない。2. Description of the Related Art In land reclamation work, it is important to determine what kind of embankment material is used and how to compact the soil. A well-closed and dense soil has a large resistance to external force. , Keep higher stability. Therefore, the spouted embankment material must be sufficiently compacted by a compacting machine.
【０００３】そのため、盛土工事を行うにあたっては、
設計時において予め盛土転圧試験を実施し、転圧機械の
機種、一層のまき出し厚さ及び最適な転圧回数を決定す
るとともに、施工時において実際のまき出し厚さや転圧
回数が設計値に沿ったものとなるように管理することが
盛土品質を向上させる上で不可欠となる。[0003] Therefore, when performing embankment construction,
At the time of design, an embankment rolling test was conducted in advance to determine the type of rolling machine, the unrolled thickness and the optimal number of rolling times, and at the time of construction, the actual unrolled thickness and the number of rolling times were set to the design values. It is indispensable to manage the quality of the embankment in order to improve the quality of the embankment.
【０００４】[0004]
【発明が解決しようとする課題】ここで、転圧済みの箇
所やその回数を監視して締固め作業を施工管理するにあ
たっては、転圧機械が造成エリア内をどのように動き回
ったか、言い換えれば転圧機械がどの場所をどの程度繰
り返し通過したかを正確に知ることが重要となる。Here, in monitoring and controlling the compaction work by monitoring the locations where the compaction has been performed and the number of times of compaction, how the compaction machine moves around in the formation area, in other words, It is important to know exactly where and how often the compacting machine has passed.
【０００５】しかしながら、造成エリアが広域になれば
なるほど、転圧機械の移動軌跡や通過回数を精度良く把
握することは困難となり、施工管理の面でも出来高管理
の面でもオペレータの主観的な判断に頼らざるを得ない
という問題を生じていた。[0005] However, as the creation area becomes wider, it becomes more difficult to grasp the movement trajectory and the number of passes of the compacting machine with high accuracy, and it becomes difficult for the operator to make a subjective judgment in both the construction management and the work volume management. The problem was that they had to rely on them.
【０００６】また、転圧回数は、現地で締固め試験を行
うことによって導き出される設計上の目標値であり、こ
れをクリアすることは締固めの品質を確保する上で重要
なことには違いないが、土質性状や含水比といった転圧
位置ごとの局所的変動要因や期間経過による季節的変動
要因が少なからず存在することに鑑みれば、すべての転
圧位置で試験時の条件通りに転圧を行うことはほとんど
不可能であり、転圧回数という指標が締固めの品質を管
理する上で絶対的なものとはならないという問題を生じ
ていた。[0006] The number of times of compaction is a design target value derived by conducting a compaction test on site, and clearing this value is important in securing the quality of compaction. However, in view of the fact that there are not a few local variation factors such as soil properties and water content at each compaction location and seasonal variation factors due to the passage of time, compaction at all compaction locations is as per the test conditions. It is almost impossible to perform the compaction, and there has been a problem that the index of the number of times of compaction is not absolute in controlling compaction quality.
【０００７】本発明は、上述した事情を考慮してなされ
たもので、盛土の締固め作業を高精度に管理するととも
に、締固め状況を転圧位置ごとに精度よく評価すること
が可能な盛土転圧管理システムを提供することを目的と
する。The present invention has been made in consideration of the above-described circumstances, and is an embankment capable of managing the compaction work of the bank with high accuracy and accurately evaluating the compaction state for each compaction position. It is intended to provide a compaction management system.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、本発明に係る盛土転圧管理システムは請求項１に記
載したように、転圧用移動体の位置を測量する位置測量
手段と、前記転圧用移動体に備えられた振動体の鉛直方
向加速度を転圧中に計測する加速度計と、該加速度計で
計測された加速度データを用いて転圧位置における地盤
の締固め評価指標を演算する演算処理手段と、前記締固
め評価指標を前記転圧位置ごとに出力する出力手段とを
備えたものである。In order to achieve the above object, an embankment rolling compaction management system according to the present invention comprises: a position surveying means for surveying a position of a rolling compact; An accelerometer that measures the vertical acceleration of the vibrating body provided in the compaction moving body during compaction, and calculates a compaction evaluation index of the ground at the compaction position using the acceleration data measured by the accelerometer. And an output means for outputting the compaction evaluation index for each of the compaction positions.
【０００９】また、本発明に係る盛土転圧管理システム
は、前記演算処理手段に、前記加速度計で計測された加
速度データから基本振動数成分を除去して修正加速度デ
ータを出力するフィルタと、前記計測加速度データと前
記修正加速度データとをそれぞれ絶対値で積分して時間
平均を求める積分回路と、該積分回路で求められた前記
修正加速度データの積分値を前記計測加速度データの積
分値で除して前記締固め評価指標となる積分比率を算出
する演算部とを備えたものである。Further, the embankment compaction management system according to the present invention, wherein the filter for removing the fundamental frequency component from the acceleration data measured by the accelerometer and outputting corrected acceleration data to the arithmetic processing means; An integration circuit for integrating the measured acceleration data and the corrected acceleration data with absolute values to obtain a time average, and dividing the integrated value of the corrected acceleration data obtained by the integration circuit by the integrated value of the measured acceleration data. And an operation unit for calculating an integration ratio serving as the compaction evaluation index.
【００１０】また、本発明に係る盛土転圧管理システム
は、前記演算処理手段に、前記加速度計で計測された加
速度データから加速度スペクトルを求めるスペクトル解
析手段と、前記加速度スペクトルを一次推定ピーク振動
数を含む第１の周波数帯域で積分して相乗平均Ａ″を求
めるとともに二次推定ピーク振動数及び三次推定ピーク
振動数を含む第２の周波数帯域で前記加速度スペクトル
を積分して相乗平均Ｂ″を求め、該相乗平均Ｂ″を前記
相乗平均Ａ″で除して前記締固め評価指標となるピーク
比率を算出する演算部とを備えたものである。Further, in the embankment compaction management system according to the present invention, the arithmetic processing means includes a spectrum analyzing means for obtaining an acceleration spectrum from acceleration data measured by the accelerometer, and a primary estimated peak frequency. And a geometric mean A ″ is obtained by integrating in a first frequency band including the following, and the acceleration spectrum is integrated in a second frequency band including the secondary estimated peak frequency and the tertiary estimated peak frequency to obtain a geometric mean B ″ And calculating a peak ratio as the compaction evaluation index by dividing the geometric mean B ″ by the geometric mean A ″.
【００１１】また、本発明に係る盛土転圧管理システム
は、前記位置測量手段の測量データを用いて前記転圧位
置における前記転圧用移動体の通過回数を転圧回数とし
て前記演算処理手段で計数するとともに、該転圧回数を
前記転圧位置ごとに出力するように前記出力手段を構成
したものである。In the embankment compaction management system according to the present invention, the number of passes of the compaction moving body at the compaction position is counted as the number of compactions by the arithmetic processing means using the survey data of the position measuring means. And the output means is configured to output the number of times of compaction for each compaction position.
【００１２】また、本発明に係る盛土転圧管理システム
は、前記演算処理手段及び前記出力手段を前記転圧用移
動体に搭載された移動側コンピュータに備えたものであ
る。In the embankment compaction management system according to the present invention, the arithmetic processing means and the output means are provided in a moving computer mounted on the compacting movable body.
【００１３】また、本発明に係る盛土転圧管理システム
は、前記演算処理手段及び前記出力手段を前記転圧用移
動体から離間した位置に設置された管理側コンピュータ
に備えたものである。Further, in the embankment compaction management system according to the present invention, the arithmetic processing means and the output means are provided in a management computer installed at a position separated from the compacting moving body.
【００１４】本発明に係る盛土転圧管理システムにおい
ては、転圧用移動体の位置を位置測量手段で測量しつ
つ、転圧用移動体に備えられた振動体の鉛直方向加速度
を加速度計で計測する。そして、その加速度データを用
いて地盤の締固め評価指標を演算し、演算結果を転圧位
置ごとに出力する。In the embankment rolling compaction management system according to the present invention, the vertical acceleration of the vibrating body provided in the compacting movable body is measured by the accelerometer while the position of the compacting movable body is measured by the position measuring means. . Then, the ground compaction evaluation index is calculated using the acceleration data, and the calculation result is output for each compaction position.
【００１５】このようにすると、土質性状等の局所的変
動要因や季節的変動要因が考慮された実際の締固め状況
が転圧位置ごとに把握されることとなり、盛土の品質を
より高い精度で管理することが可能となる。In this way, the actual compaction situation taking into account local and seasonal fluctuation factors such as soil properties can be grasped for each compaction position, and the quality of the embankment can be determined with higher accuracy. It becomes possible to manage.
【００１６】地盤の締固め評価指標を加速度データから
どのようにして求めるかは任意であり、例えば加速度ス
ペクトル（パワースペクトル）のピーク値に着目した従
来手法、すなわち、計測された振動体の加速度時刻歴デ
ータをフーリエ解析によって周波数領域に変換し、次
に、変換されたデータから卓越振動数における加速度ス
ペクトル（パワースペクトル）を基本（一次）振動数で
のピーク値Ａ、二次振動数でのピーク値Ｂ、三次振動数
でのピーク値Ｃとしてそれぞれ求め、しかる後に比率
（Ｂ＋Ｃ）/Ａを演算して締固め評価指標とする方法を
採用することができる。How to obtain the ground compaction evaluation index from the acceleration data is arbitrary. For example, a conventional method focusing on the peak value of the acceleration spectrum (power spectrum), that is, the measured acceleration time of the vibrating body is used. The history data is converted into the frequency domain by Fourier analysis, and then the acceleration spectrum (power spectrum) at the dominant frequency is converted to a peak value A at the basic (primary) frequency and a peak at the secondary frequency from the converted data. A value B and a peak value C at the tertiary frequency are obtained, and then a ratio (B + C) / A is calculated and used as a compaction evaluation index.
【００１７】ここで、前記演算処理手段に、前記加速度
計で計測された加速度データから基本振動数成分を除去
して修正加速度データを出力するフィルタと、前記計測
加速度データと前記修正加速度データとをそれぞれ絶対
値で積分して時間平均を求める積分回路と、該積分回路
で求められた前記修正加速度データの積分値を前記計測
加速度データの積分値で除して前記締固め評価指標とな
る積分比率を算出する演算部とを備えた場合において
は、計測された加速度データを積分回路にて絶対値で積
分、すなわち正負を別々に積分したものを総和する形で
積分して時間平均を求め、これを計測加速度データの積
分値とする。一方、計測された加速度データからフィル
タで基本振動数成分を除去して修正加速度データ（主と
して二次振動数成分及び三次振動数成分が含まれる）と
し、次いで、該修正加速度データを同様にして積分回路
で絶対値で積分して時間平均を求め、これを修正加速度
データの積分値とする。Here, the arithmetic processing means includes a filter that removes a fundamental frequency component from the acceleration data measured by the accelerometer and outputs corrected acceleration data. The filter includes the measured acceleration data and the corrected acceleration data. An integration circuit for obtaining a time average by integrating the respective absolute values, and an integration ratio serving as the compaction evaluation index by dividing the integration value of the corrected acceleration data obtained by the integration circuit by the integration value of the measured acceleration data. In the case where there is provided an arithmetic unit for calculating the time average, the measured acceleration data is integrated by an integrating circuit by an absolute value, that is, the integral obtained by integrating positive and negative separately is obtained to obtain a time average. Is the integral value of the measured acceleration data. On the other hand, the fundamental frequency component is removed from the measured acceleration data by a filter to obtain corrected acceleration data (mainly including a secondary frequency component and a tertiary frequency component), and then the corrected acceleration data is similarly integrated. The circuit integrates the absolute value to obtain a time average, which is used as the integrated value of the corrected acceleration data.
【００１８】なお、基本振動数成分を除去するフィルタ
操作を行うにあたっては、基本振動数を予め求めておく
必要があるが、かかる基本振動数は、振動体固有の値で
あるため、転圧開始前に一度だけフィルタに設定してお
けば足りる。When a filter operation for removing the fundamental frequency component is performed, it is necessary to obtain the fundamental frequency in advance. However, since the fundamental frequency is a value unique to the vibrating body, the rolling pressure starts. You only need to set the filter once before.
【００１９】次に、演算部にて修正加速度データの積分
値Ａ′を計測加速度データの積分値Ｂで除する、すなわ
ちＡ′／Ｂ′を演算して積分比率とし、該積分比率を上
述の締固め評価指標とする。Next, the integral value A 'of the corrected acceleration data is divided by the integral value B of the measured acceleration data in the computing section, that is, A' / B 'is computed to obtain the integral ratio, and the integral ratio is calculated as described above. The compaction evaluation index.
【００２０】このようにすると、転圧中に振動体が地表
から跳ね上がるような場合、例えばロック材料を転圧す
るような場合であっても、地盤からの反発エネルギーが
修正加速度データの積分値に反映され、かくして、土の
締固め状況を簡単なデータ解析だけで適切に評価するこ
とが可能となる。In this way, even when the vibrating body jumps from the ground surface during compaction, for example, when the lock material is compacted, the repulsive energy from the ground is reflected in the integrated value of the corrected acceleration data. Thus, the compaction state of the soil can be appropriately evaluated by simple data analysis.
【００２１】また、前記演算処理手段に、前記加速度計
で計測された加速度データから加速度スペクトルを求め
るスペクトル解析手段と、前記加速度スペクトルを一次
推定ピーク振動数を含む第１の周波数帯域で積分して相
乗平均Ａ″を求めるとともに二次推定ピーク振動数及び
三次推定ピーク振動数を含む第２の周波数帯域で前記加
速度スペクトルを積分して相乗平均Ｂ″を求め、該相乗
平均Ｂ″を前記相乗平均Ａ″で除して前記締固め評価指
標となるピーク比率を算出する演算部とを備えた場合に
おいては、まず、計測された加速度データの加速度スペ
クトルをＦＦＴアナライザ等のスペクトル解析手段を用
いて求め、次いで、演算部にて前記加速度スペクトルを
一次推定ピーク振動数を含む第１の周波数帯域で積分し
て相乗平均Ａ″を求めるとともに、二次推定ピーク振動
数及び三次推定ピーク振動数を含む第２の周波数帯域で
積分して相乗平均Ｂ″を求め、しかる後に該相乗平均
Ｂ″を前記相乗平均Ａ″で除する、すなわちＢ″／Ａ″
を演算してピーク比率とし、該ピーク比率を上述の締固
め評価指標とする。The arithmetic processing means includes spectrum analysis means for obtaining an acceleration spectrum from acceleration data measured by the accelerometer, and the acceleration spectrum is integrated in a first frequency band including a primary estimated peak frequency. A geometric mean A ″ is obtained, and the acceleration spectrum is integrated in a second frequency band including the secondary estimated peak frequency and the tertiary estimated peak frequency to obtain a geometric mean B ″, and the geometric mean B ″ is calculated using the geometric mean A calculation unit for calculating the peak ratio serving as the compaction evaluation index by dividing by A ″, first, the acceleration spectrum of the measured acceleration data is obtained using spectrum analysis means such as an FFT analyzer. Then, the arithmetic unit integrates the acceleration spectrum in a first frequency band including the primary estimated peak frequency to obtain a geometric mean A ″. In addition, the geometric mean B ″ is obtained by integrating in the second frequency band including the secondary estimated peak frequency and the tertiary estimated peak frequency, and then the geometric mean B ″ is divided by the geometric mean A ″. , Ie B ″ / A ″
Is calculated as a peak ratio, and the peak ratio is used as the above-mentioned compaction evaluation index.
【００２２】このようにすると、基本ピーク振動数や二
次若しくは三次ピーク振動数に変動が生じたとしても、
第１の周波数帯域や第２の周波数帯域を適宜設定してお
けば、真のピーク振動数は、これらの周波数帯域に必ず
含まれることとなり、加速度スペクトルにも真のピーク
振動数での値が反映される。In this way, even if the basic peak frequency or the secondary or tertiary peak frequency fluctuates,
If the first frequency band and the second frequency band are appropriately set, the true peak frequency is always included in these frequency bands, and the value at the true peak frequency is also included in the acceleration spectrum. Will be reflected.
【００２３】ここで、一次推定ピーク振動数とは、一次
ピーク振動数としてとりあえず初期的に設定される振動
数であって転圧中に変動の可能性があるものであり、第
１の周波数帯域とは、かかる変動があったとしても真の
一次ピーク振動数が必ず含まれることになるであろう帯
域を意味する。Here, the primary estimated peak frequency is a frequency which is initially set as the primary peak frequency and which may fluctuate during rolling compaction. Means a band in which a true primary peak frequency will always be included even if such a fluctuation occurs.
【００２４】同様に、二次推定ピーク振動数及び三次推
定ピーク振動数とは、それぞれ二次ピーク振動数、三次
ピーク振動数としてとりあえず初期的に設定される振動
数であって転圧中に変動の可能性があるものであり、第
２の周波数帯域とは、かかる変動があったとしても真の
二次ピーク振動数及び三次ピーク振動数が必ず含まれる
ことになるであろう帯域を意味する。Similarly, the secondary estimated peak frequency and the tertiary estimated peak frequency are initially set as the secondary peak frequency and the tertiary peak frequency, respectively, and vary during rolling. The second frequency band means a band in which a true secondary peak frequency and a tertiary peak frequency will always be included even if such a fluctuation occurs. .
【００２５】このように、本発明に係る盛土転圧管理シ
ステムは、盛土の締固め管理を従来のように転圧回数に
基づいて行うのではなく、加速度データを用いて行うた
め、原則として転圧回数に関するデータの収集、解析等
は不要であるが、前記位置測量手段の測量データを用い
て前記転圧位置における前記転圧用移動体の通過回数を
転圧回数として前記演算処理手段で計数するとともに、
該転圧回数を前記転圧位置ごとに出力するように前記出
力手段を構成したならば、加速度データを用いた手法、
いわば地盤の弾性挙動に基づく管理手法と転圧回数に基
づく管理手法とを併用することができるので、盛土の締
固め状況をより客観的に把握することが可能となる。As described above, the embankment compaction management system according to the present invention performs the compaction management of the embankment using acceleration data instead of performing the compaction management based on the number of times of compaction as in the related art. Although it is not necessary to collect and analyze data relating to the number of times of pressure, the number of times the moving body for compaction passes at the compaction position is counted as the number of times of compaction by the arithmetic processing means using the survey data of the position surveying means. With
If the output means is configured to output the number of times of compaction for each compaction position, a method using acceleration data,
In other words, the management method based on the elastic behavior of the ground and the management method based on the number of times of compaction can be used together, so that the compaction state of the embankment can be grasped more objectively.
【００２６】本発明に係る盛土転圧管理システムにおい
て転圧用移動体の位置をどのように測量するか、言い換
えれば位置測量手段をどのように構成するかは任意であ
り、例えばトータルステーションやＧＰＳの採用が考え
られる。In the embankment compaction management system according to the present invention, how to measure the position of the moving body for compaction, in other words, how to configure the position measuring means, is arbitrary, for example, adoption of a total station or GPS. Can be considered.
【００２７】ここで、位置測量手段をＧＰＳで構成する
場合、該ＧＰＳの測位方式は問わないが、リアルタイム
性という面では、単独測位方式や、干渉測位の一種であ
るＲＴＫ―ＧＰＳ（リアルタイムキネマティックＧＰ
Ｓ）方式、あるいはＤＧＰＳ（ディファレンシャルＧＰ
Ｓ）方式などが優れている。特に、ＤＧＰＳ方式は、Ｒ
ＴＫ―ＧＰＳ方式よりも安価で衛星電波の受信不具合等
からの計測可能時までの復帰時間が速く、位置特定に必
要な衛星数も４つでよいなどの利点がある。Here, when the position measuring means is constituted by GPS, the positioning method of the GPS does not matter, but in terms of real-time performance, the independent positioning method or RTK-GPS (real-time kinematics) which is a kind of interference positioning is used. GP
S) or DGPS (Differential GP)
S) method is excellent. In particular, the DGPS method uses R
The TK-GPS method is advantageous in that it is less expensive than the TK-GPS method, has a faster recovery time from the time of measurement failure due to satellite radio wave reception failure, and requires only four satellites for position identification.
【００２８】なお、ＤＧＰＳ方式を採用する場合には、
転圧用移動体に搭載するＧＰＳ測量装置のほかに、基準
位置にて単独測位を行うとともにその結果を転圧用移動
体に搭載されたＧＰＳ測量装置に送るための基準局が別
途必要となることは言うまでもない。When the DGPS method is used,
It goes without saying that, besides the GPS surveying device mounted on the compaction moving body, a reference station for performing independent positioning at the reference position and sending the result to the GPS surveying device mounted on the compacting moving body is required separately. No.
【００２９】また、ＤＧＰＳ測位方式では、４個以上の
ＧＰＳ衛星からＧＰＳ電波を受信できる状態であれば３
次元測位を行えばよいし、気象条件や周囲の障害物等の
関係で受信可能な衛星数が３個に減少する場合には、２
次元測位を行えばよい。In the DGPS positioning method, if a GPS radio wave can be received from four or more GPS satellites, three
If the number of satellites that can be received is reduced to three due to weather conditions or surrounding obstacles, two-dimensional positioning may be performed.
It is sufficient to perform dimensional positioning.
【００３０】出力手段としては、ＣＲＴディスプレイ、
液晶モニタなどの画面表示型装置が主な対象となるが、
視覚的に把握可能なものであれば、印刷型装置たとえば
プリンタやプロッタでもよい。また、それらの出力の仕
方としては、締固め評価指標を転圧位置を示す座標とと
もに数値で表示する、転圧対象エリアを微小要素に分割
してそれらをメッシュ状に表示するとともに各微小要素
に該当する転圧位置での締固め評価指標をその大きさに
応じて色分け表示するなどの方法が考えられる。As output means, a CRT display,
The main targets are screen display devices such as LCD monitors.
A printing-type device such as a printer or a plotter may be used as long as it can be visually grasped. In addition, as a method of outputting them, the compaction evaluation index is displayed numerically together with the coordinates indicating the compaction position, the compaction target area is divided into small elements, and they are displayed in a mesh shape, and each compact element is displayed. A method of displaying the compaction evaluation index at the corresponding compaction position in accordance with the size of the compaction index or the like can be considered.
【００３１】上述した各発明においては、演算処理手段
及び出力手段を転圧用移動体に搭載された移動側コンピ
ュータに設けるようにしてもよいし、該転圧用移動体か
ら離間した位置に設置された管理側コンピュータに設け
るようにしてもよい。In each of the above-described inventions, the arithmetic processing means and the output means may be provided on the moving computer mounted on the compacting moving body, or may be provided at a position separated from the compacting moving body. You may make it provide in a management side computer.
【００３２】前者によれば、転圧用移動体のオペレータ
が該転圧用移動体による締固め状況を自ら知ることがで
きる。かかる場合におけるコンピュータは、ノート型、
ペン入力型などの携帯性の高いパソコンが主な対象とな
るが、転圧用移動体の運転席に設置される据付け型でも
よい。According to the former, the operator of the compacting moving body can know the compaction state by the compacting moving body. In such a case, the computer is a notebook,
The main target is a personal computer with high portability such as a pen input type, but it may be a stationary type installed in the driver's seat of a mobile unit for compaction.
【００３３】一方、後者によれば、管理側にて転圧用移
動体による締固め状況を管理することができるので、広
い転圧対象エリア内を多数の転圧用移動体が走り回るよ
うな状況では特に都合がよい。On the other hand, according to the latter, the compaction state by the compaction moving body can be managed on the management side, and therefore, especially in a situation where a large number of compacting moving bodies run around in a wide compaction target area. convenient.
【００３４】[0034]
【発明の実施の形態】以下、本発明に係る盛土転圧管理
システムの実施の形態について、添付図面を参照して説
明する。なお、従来技術と実質的に同一の部品等につい
ては同一の符号を付してその説明を省略する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of an embankment rolling compaction management system according to the present invention will be described with reference to the accompanying drawings. It is to be noted that the same reference numerals are given to components and the like that are substantially the same as those in the conventional technology, and description thereof will be omitted.
【００３５】（第１実施形態）(First Embodiment)
【００３６】図１は、本実施形態に係る盛土転圧管理シ
ステムを示した概念図及び全体ブロック図である。同図
でわかるように、本実施形態に係る盛土転圧管理システ
ムは、転圧用移動体である振動ローラ１ａ、１ｂ、１ｃ
にそれぞれＧＰＳ測量装置２ａ、２ｂ、２ｃを搭載する
とともに、該振動ローラの運転席には移動側コンピュー
タ３ａ、３ｂ、３ｃを据え付け、振動ローラ１ａ、１
ｂ、１ｃと離間した位置、例えば現場事務所内には管理
側コンピュータ４を設置してある。FIG. 1 is a conceptual diagram and an overall block diagram showing an embankment rolling compaction management system according to this embodiment. As can be seen from the figure, the embankment rolling compaction management system according to the present embodiment includes vibratory rollers 1a, 1b, 1c, which are compacting moving bodies.
Are mounted with GPS surveying devices 2a, 2b and 2c, respectively, and moving-side computers 3a, 3b and 3c are installed on the driver's seat of the vibrating rollers,
A management-side computer 4 is installed at a position apart from b and 1c, for example, in a field office.
【００３７】ここで、各振動ローラ１ａ、１ｂ、１ｃに
備えられた振動体である振動輪２１ａ、２１ｂ、２１ｃ
の非減衰部には、該振動輪の鉛直方向加速度を転圧中に
計測可能な加速度計２０ａ、２０ｂ、２０ｃをそれぞれ
取り付けてあるとともに、移動側コンピュータ３ａ、３
ｂ、３ｃには、演算処理手段としての演算処理装置５、
出力手段としての液晶表示モニタ６及び演算処理結果を
記憶する記憶装置７を設けてあり、加速度計２０ａ、２
０ｂ、２０ｃで計測された加速度データを用いて転圧位
置における地盤の締固め評価指標を演算処理装置５で演
算するとともに、ＧＰＳ測量装置２ａ、２ｂ、２ｃで計
測されたＧＰＳ測量データを利用することによって演算
結果である締固め評価指標を転圧位置ごとに液晶表示モ
ニタ６に出力表示するようになっている。Here, vibrating wheels 21a, 21b, 21c, which are vibrating members provided on each of the vibrating rollers 1a, 1b, 1c.
Are mounted with accelerometers 20a, 20b, 20c respectively capable of measuring the vertical acceleration of the vibrating wheel during rolling.
b and 3c include an arithmetic processing unit 5 as arithmetic processing means;
A liquid crystal display monitor 6 as output means and a storage device 7 for storing the result of arithmetic processing are provided.
Using the acceleration data measured at 0b and 20c, the ground compaction evaluation index at the compaction position is calculated by the arithmetic processing unit 5, and the GPS survey data measured by the GPS surveying devices 2a, 2b and 2c is used. As a result, the compaction evaluation index, which is the calculation result, is output and displayed on the liquid crystal display monitor 6 for each rolling pressure position.
【００３８】すなわち、演算処理装置５は、加速度計２
０ａ、２０ｂ、２０ｃで計測された振動輪２１ａ、２１
ｂ、２１ｃの加速度時刻歴データを、内蔵されたＦＦＴ
アナライザでフーリエ解析して加速度スペクトルを算出
するとともに、算出された加速度スペクトルから卓越振
動数における加速度スペクトル（パワースペクトル）を
基本（一次）振動数でのピーク値Ａ、二次振動数でのピ
ーク値Ｂ、三次振動数でのピーク値Ｃとしてそれぞれ求
め、しかる後に比率（Ｂ＋Ｃ）/Ａを演算して締固め評
価指標とするようになっている。That is, the arithmetic processing unit 5 includes the accelerometer 2
Vibration wheels 21a, 21 measured at 0a, 20b, 20c
b, 21c acceleration time history data
The Fourier analysis is performed by an analyzer to calculate the acceleration spectrum, and the acceleration spectrum (power spectrum) at the dominant frequency is calculated from the calculated acceleration spectrum as a peak value A at a basic (primary) frequency and a peak value at a secondary frequency. B and a peak value C at the tertiary frequency, respectively, and then the ratio (B + C) / A is calculated and used as a compaction evaluation index.
【００３９】なお、演算処理装置５は、ＧＰＳ測量装置
２ａ、２ｂ、２ｃで計測されたＧＰＳ測量データを用い
て転圧対象エリア内の任意の転圧位置における振動ロー
ラ１ａ、１ｂ、１ｃの通過回数を転圧回数として計数す
る機能を併せ持つとともに、液晶表示モニタ６、記憶装
置７についても、かかる計数結果をそれぞれ出力するよ
うになっている。The arithmetic processing device 5 uses the GPS survey data measured by the GPS surveying devices 2a, 2b, 2c to pass the vibration rollers 1a, 1b, 1c at any rolling position within the rolling target area. In addition to having a function of counting the number of times as the number of times of compaction, the liquid crystal display monitor 6 and the storage device 7 are also configured to output the results of the counting.
【００４０】ＧＰＳ測量装置２ａ、２ｂ、２ｃは、ＧＰ
Ｓ衛星からの電波をＧＰＳアンテナ８を介して受信して
ＧＰＳ計測を行うＧＰＳ受信機１０を備え、該ＧＰＳ受
信機は、基準局１１からの基準データをアンテナ９で受
信してＤＧＰＳ測位方式でのＧＰＳ測量データを得るこ
とができるようになっている。すなわち、ＧＰＳ受信機
１０は、基準局１１に設置されたＧＰＳ測量装置１２で
の単独測位結果を送信機１３を介して基準データとして
受信し、該基準データとＧＰＳ受信機１０自身で計測さ
れた単独測位結果とを差し引きすることでリアルタイム
性と精度とを兼ね備えたＤＧＰＳ測位データを得ること
ができるようになっており、ＧＰＳ測量装置２ａ、２
ｂ、２ｃは、ＧＰＳ測量装置１２とともに転圧用移動体
である振動ローラ１ａ、１ｂ、１ｃの位置を測量する位
置測量手段として機能する。The GPS surveying devices 2a, 2b, 2c
A GPS receiver 10 for receiving a radio wave from the S satellite via a GPS antenna 8 and performing GPS measurement is provided. The GPS receiver receives reference data from a reference station 11 via an antenna 9 and uses a DGPS positioning method. GPS survey data can be obtained. That is, the GPS receiver 10 receives the single positioning result of the GPS surveying device 12 installed in the reference station 11 as the reference data via the transmitter 13, and receives the reference data and the single measurement measured by the GPS receiver 10 itself. By subtracting the positioning result, DGPS positioning data having both real-time performance and accuracy can be obtained.
b and 2c function together with the GPS surveying device 12 as position surveying means for surveying the positions of the vibrating rollers 1a, 1b and 1c, which are moving bodies for rolling.
【００４１】一方、管理側コンピュータ４は、演算処理
手段としての演算処理装置１７、出力手段としてのＣＲ
Ｔディスプレイ１８及び演算処理結果を記憶する記憶装
置１９を設けてあり、加速度計２０ａ、２０ｂ、２０ｃ
で計測された加速度データを振動ローラ１ａ、１ｂ、１
ｃにそれぞれ搭載された送信機１４ａ、１４ｂ、１４
ｃ、現場事務所側に設置されたアンテナ１５ａ、１５
ｂ、１５ｃ及び受信機１６ａ、１６ｂ、１６ｃを介して
受信するとともに、受信された加速度データを用いて転
圧位置における地盤の締固め評価指標を演算処理装置１
７で演算し、さらにＧＰＳ測量装置２ａ、２ｂ、２ｃで
計測されたＧＰＳ測量データを利用することによって演
算結果である締固め評価指標を転圧位置ごとにＣＲＴデ
ィスプレイ１８に出力表示するようになっている。On the other hand, the management computer 4 has an arithmetic processing unit 17 as arithmetic processing means and a CR as output means.
A T display 18 and a storage device 19 for storing a result of the arithmetic processing are provided, and accelerometers 20a, 20b, and 20c are provided.
The acceleration data measured by the vibration rollers 1a, 1b, 1
transmitters 14a, 14b, 14 mounted on
c, antennas 15a, 15 installed on the site office side
b, 15c and the receivers 16a, 16b, 16c, and calculates the ground compaction evaluation index at the compaction position using the received acceleration data.
7, the compaction evaluation index, which is the computation result, is output and displayed on the CRT display 18 for each rolling position by using the GPS survey data measured by the GPS surveying devices 2a, 2b, 2c. ing.
【００４２】すなわち、演算処理装置１７も演算処理装
置５と同様、加速度計２０ａ、２０ｂ、２０ｃで計測さ
れた振動輪２１ａ、２１ｂ、２１ｃの加速度時刻歴デー
タを、内蔵されたＦＦＴアナライザでフーリエ解析して
加速度スペクトルを算出するとともに、算出された加速
度スペクトルから卓越振動数における加速度スペクトル
（パワースペクトル）を基本（一次）振動数でのピーク
値Ａ、二次振動数でのピーク値Ｂ、三次振動数でのピー
ク値Ｃとしてそれぞれ求め、しかる後に比率（Ｂ＋Ｃ）
/Ａを演算して締固め評価指標とするようになってい
る。That is, similarly to the arithmetic processing unit 5, the arithmetic processing unit 17 performs Fourier analysis of the acceleration time history data of the vibrating wheels 21a, 21b, 21c measured by the accelerometers 20a, 20b, 20c by the built-in FFT analyzer. In addition to calculating the acceleration spectrum, the acceleration spectrum (power spectrum) at the dominant frequency is calculated from the calculated acceleration spectrum to a peak value A at the basic (primary) frequency, a peak value B at the secondary frequency, and a tertiary vibration. Each is obtained as a peak value C in a number, and then the ratio (B + C)
/ A is calculated and used as a compaction evaluation index.
【００４３】なお、演算処理装置１７は、ＧＰＳ測量装
置２ａ、２ｂ、２ｃから送信機１４ａ、１４ｂ、１４
ｃ、現場事務所側のアンテナ１５ａ、１５ｂ、１５ｃ及
び受信機１６ａ、１６ｂ、１６ｃを介してＧＰＳ測量デ
ータを受信するとともに該ＧＰＳ測量データを用いて転
圧対象エリア内の任意の転圧位置における振動ローラ１
ａ、１ｂ、１ｃの通過回数を転圧回数として計数する機
能を併せ持つとともに、ＣＲＴディスプレイ１８、記憶
装置１９についても、かかる計数結果をそれぞれ出力す
るようになっている。It should be noted that the arithmetic processing unit 17 transmits the signals from the GPS surveying devices 2a, 2b and 2c to the transmitters 14a, 14b and 14c.
c, receiving the GPS survey data via the antennas 15a, 15b, 15c and the receivers 16a, 16b, 16c on the site office side and using the GPS survey data at any compaction position in the compaction target area Vibration roller 1
In addition to having a function of counting the number of times of passing through a, 1b, and 1c as the number of times of rolling, the CRT display 18 and the storage device 19 also output the counting results.
【００４４】ここで、上述した演算処理装置５、１７
は、転圧対象エリアを微小要素にメッシュ分割して該微
小要素ごとに締固め評価指標の演算処理及び振動ローラ
１ａ、１ｂ、１ｃによる転圧回数の計数を行うととも
に、演算処理結果や計数結果を受け取った液晶表示モニ
タ６やＣＲＴディスプレイ１８は、微小要素をメッシュ
状に表示するとともに各微小要素に該当する転圧位置で
の締固め評価指標や転圧回数をその大きさや回数に応じ
て色分け表示するようになっている。Here, the above-described arithmetic processing units 5, 17
Calculates the compaction evaluation index and counts the number of times of compaction by the vibrating rollers 1a, 1b, and 1c, divides the compaction target area into meshes of small elements, meshes the compaction evaluation index, and counts the number of compactions. The liquid crystal display monitor 6 and the CRT display 18 which received the display the microelements in a mesh shape and color-coded the compaction evaluation index and the number of times of compaction at the compaction position corresponding to each microelement according to the size and number of times. It is displayed.
【００４５】微小要素の大きさについては、振動ローラ
１ａ、１ｂ、１ｃの転圧幅や所要精度あるいは演算に要
する時間等を考慮して設計的見地から適宜定めればよ
く、例えば転圧回数を表示する微小要素については５０
ｃｍ〜２ｍ角程度、締固め評価指標を表示する微小要素
については２ｍ〜５ｍ角程度の大きさとすればよい。The size of the microelement may be appropriately determined from the viewpoint of design in consideration of the rolling width of the vibrating rollers 1a, 1b, and 1c, the required accuracy, the time required for the calculation, and the like. 50 for small elements to be displayed
The size of the small element for displaying the compaction evaluation index may be about 2 cm to 2 m square, and may be about 2 m to 5 m square.
【００４６】本実施形態に係る盛土転圧管理システムに
おいては、振動ローラ１ａ、１ｂ、１ｃに搭載されたＧ
ＰＳ測量装置２ａ、２ｂ、２ｃで該振動ローラの位置を
ＤＧＰＳ測位方式で計測する。In the embankment compaction management system according to the present embodiment, the G mounted on the vibrating rollers 1a, 1b, 1c
The position of the vibrating roller is measured by the DGPS positioning method using the PS surveying devices 2a, 2b, and 2c.
【００４７】次に、ＧＰＳ測量データと振動輪２１ａ、
２１ｂ、２１ｃの転圧幅データを用いて、転圧対象エリ
ア内の任意位置における転圧回数を演算処理装置５、１
７で計数する。転圧回数をカウントするには、上述した
ように転圧対象エリアを微小要素にメッシュ分割し、該
微小要素を振動輪２１ａ、２１ｂ、２１ｃが通過したと
きに転圧が行われたと判断すればよい。Next, the GPS survey data and the vibration wheel 21a,
The number of times of compaction at an arbitrary position in the compaction target area is calculated using the compaction width data of 21b and 21c.
Count at 7. In order to count the number of times of compaction, as described above, the compaction target area is divided into small elements by mesh, and when it is determined that compaction has been performed when the vibrating wheels 21a, 21b, 21c pass through the small elements. Good.
【００４８】次に、その計数結果を移動側コンピュータ
３ａ、３ｂ、３ｃの液晶表示モニタ６や管理側コンピュ
ータ４のＣＲＴディスプレイ１８に表示する。Next, the counting result is displayed on the liquid crystal display monitor 6 of the mobile computers 3a, 3b, 3c and the CRT display 18 of the management computer 4.
【００４９】図２は、移動側コンピュータ３ａに備えら
れた液晶表示モニタ６の画面を示したものであり、同図
でわかるように、画面上には転圧対象エリア３５内にお
ける振動ローラ１ａによる転圧回数を表示してある。こ
こで、転圧回数の表示は、１回だけ転圧された箇所を領
域３１、二回転圧された箇所を領域３２、三回転圧され
た箇所を領域３３と表示するとともに、同図では認識で
きないが、その内側をそれぞれ青、水色、ピンクという
ように異なる色で塗り分けてある。なお、同図には、振
動ローラ１ａの転圧回数を計数するにあたっての微小要
素の大きさを格子状の破線で示すとともに、振動ローラ
１ａを表す図形３４をその大きさがわかるように重ねて
表示してある。FIG. 2 shows a screen of the liquid crystal display monitor 6 provided in the moving-side computer 3a. As can be seen from FIG. The number of times of rolling is displayed. Here, the number of times of compaction is displayed as a region 31 that has been compacted only once, a region 32 that has been compacted twice, and a region 33 that has been compacted three times. You can't, but the inside is painted in different colors, such as blue, light blue, and pink. In the same figure, the size of the minute element in counting the number of times of rolling of the vibrating roller 1a is shown by a broken line in a grid, and a graphic 34 representing the vibrating roller 1a is superimposed so that the size can be understood. It is displayed.
【００５０】ここで、同図では、振動ローラ１ａの姿勢
（方向）がわかるように表示してあるが、かかる表示を
行うためには、各振動ローラ１ａ、１ｂ、１ｃに光ジャ
イロ、磁気方位センサ等の姿勢計測手段を搭載し、該姿
勢計測手段で計測された姿勢計測データを演算処理装置
５、１７で演算処理することで各振動ローラ１ａ、１
ｂ、１ｃの姿勢を計測するようにすればよい。In this figure, the posture (direction) of the vibrating roller 1a is displayed so that it can be understood. However, in order to perform such a display, the vibrating rollers 1a, 1b, and 1c are provided with an optical gyro and a magnetic azimuth. Each of the vibrating rollers 1a, 1 is provided with an attitude measuring means such as a sensor, and arithmetically processing the attitude measurement data measured by the attitude measuring means in the arithmetic processing devices 5, 17.
What is necessary is just to measure the attitude of b, 1c.
【００５１】また、このような姿勢計測手段からの姿勢
計測データを用いて上述したＧＰＳ測量データを演算処
理装置５、１７にて補正するようにしてもよい。すなわ
ち、ＧＰＳ測量データの座標位置と振動輪２１ａ、２１
ｂ、２１ｃの位置とは通常は一致せず、ＧＰＳ測量装置
２ａ、２ｂ、２ｃの取付位置によっては例えば数十ｃｍ
〜数ｍ程度のずれが生じる。したがって、測量に先だっ
て予めＧＰＳ測量データの評価位置、すなわちＧＰＳ測
量装置２ａ、２ｂ、２ｃの設置位置と振動輪２１ａ、２
１ｂ、２１ｃの位置とを予め調べて両者を関連付けてお
き、次いで、姿勢計測データを用いて振動ローラ１ａ、
１ｂ、１ｃの姿勢を特定し、次いで、振動輪２１ａ、２
１ｂ、２１ｃでの座標位置を求める。なお、演算処理装
置１７で補正を行う場合には、姿勢計測データを送信機
１４ａ、１４ｂ、１４ｃ及び受信機１６ａ、１６ｂ、１
６ｃを介して移動側コンピュータ３ａ、３ｂ、３ｃから
受け取るようにすればよい。The above-mentioned GPS measurement data may be corrected by the arithmetic processing units 5 and 17 using the posture measurement data from such posture measurement means. That is, the coordinate positions of the GPS survey data and the vibrating wheels 21a and 21
b and 21c do not usually coincide with each other, and for example, several tens of cm depending on the mounting position of the GPS surveying devices 2a, 2b and 2c.
A deviation of about several meters occurs. Therefore, prior to the survey, the evaluation position of the GPS survey data, that is, the installation positions of the GPS survey devices 2a, 2b, and 2c and the vibration wheels 21a, 2a
The positions of the vibrating rollers 1a and 21c are checked in advance and associated with each other.
1b, 1c, and then the vibrating wheels 21a, 2b
The coordinate positions at 1b and 21c are obtained. When the correction is performed by the arithmetic processing unit 17, the attitude measurement data is transmitted to the transmitters 14a, 14b, 14c and the receivers 16a, 16b, 1c.
What is necessary is just to receive from the mobile computer 3a, 3b, 3c via 6c.
【００５２】図３は、管理側コンピュータ４に備えられ
たＣＲＴディスプレイ１８の画面を示したものであり、
同図でわかるように、画面上には転圧対象エリア３５内
における振動ローラ１ａ、１ｂ、１ｃの転圧回数を表示
してある。ここで、転圧回数を表示するにあたっては、
図２と同様、振動ローラ１ａによって１回だけ転圧され
た箇所を領域３１ａ、二回転圧された箇所を領域３２
ａ、三回転圧された箇所を領域３３ａ、振動ローラ１ｂ
によって１回だけ転圧された箇所を領域３１ｂ、二回転
圧された箇所を領域３２ｂ、三回転圧された箇所を領域
３３ｂ、振動ローラ１ｃによって１回だけ転圧された箇
所を領域３１ｃ、二回転圧された箇所を領域３２ｃ、三
回転圧された箇所を領域３３ｃというように表示すると
ともに、同図では認識できないが、その内側をそれぞれ
青、水色、ピンクというように塗り分けてある。なお、
振動ローラ１ａ、１ｂ、１ｃの図形３４ａ、３４ｂ、３
４ｃをその大きさや姿勢がわかるように重ねて表示して
ある。FIG. 3 shows a screen of the CRT display 18 provided in the management computer 4.
As can be seen from the figure, the number of times the vibrating rollers 1a, 1b, 1c have been pressed in the rolling target area 35 is displayed on the screen. Here, in displaying the number of times of compaction,
As in FIG. 2, a portion that has been rolled only once by the vibrating roller 1 a is a region 31 a, and a portion that has been twice rolled is a region 32 a.
a, the area where three rotation pressures are applied to the area 33a, the vibrating roller 1b
The area that has been rolled only once by the area 31b, the area that has been twice pressed by the area 32b, the area that has been pressed three times by the area 33b, and the area that has been pressed once by the vibrating roller 1c are the areas 31c and 2b. The portion subjected to the rotation pressure is displayed as a region 32c, and the portion subjected to the three rotation pressures is displayed as a region 33c, and the inside thereof is colored blue, light blue, and pink, respectively, although it cannot be recognized in FIG. In addition,
Figures 34a, 34b, 3 of vibrating rollers 1a, 1b, 1c
4c is superimposed and displayed so that its size and posture can be understood.
【００５３】なお、計測されたＧＰＳ測量データあるい
はそれらを演算処理して得られた転圧回数を記憶装置
７、１９に記憶しておけば、かかるデータを必要に応じ
て随時画面表示したり印刷したりすることができる。If the measured GPS survey data or the number of times of compaction obtained by arithmetically processing them are stored in the storage devices 7 and 19, such data can be displayed on a screen or printed as needed. Or you can.
【００５４】このように、移動側コンピュータ３ａ、３
ｂ、３ｃの液晶表示モニタ６や管理側コンピュータ４の
ＣＲＴディスプレイ１８に表示された転圧回数を見るこ
とによって、オペレータ自らあるいは管理事務所側の指
示で転圧回数を管理しながら盛土の締固めを行うが、例
えばその日の作業が終了した後、締固め作業の進捗状況
すなわち出来高を調べたい場合には、例えば図３で説明
すれば、転圧回数が１回の領域３１ａ、３１ｂ、３１ｃ
を該転圧回数に対する転圧済領域とするとともに、該領
域内に含まれる微小要素の面積を総和することによって
転圧回数が１回の転圧済領域に対する面積を演算処理装
置１７で演算する。転圧回数が２回の領域３２ａ、３２
ｂ、３２ｃ、転圧回数が３回の領域３３ａ、３３ｂ、３
３ｃについても同様の処理を行う。そして、各転圧回数
に対する転圧済領域の面積を例えば表形式でＣＲＴディ
スプレイ１８に表示する。As described above, the mobile computers 3a, 3a
By watching the number of times of compaction displayed on the liquid crystal display monitor 6b or 3c or the CRT display 18 of the management side computer 4, compacting the embankment while controlling the number of times of compaction by the operator himself or the instruction of the management office. For example, if it is desired to check the progress of the compaction work, that is, the work volume after the work of the day is completed, as illustrated in FIG. 3, for example, the regions 31a, 31b, and 31c in which the number of times of compaction is 1 are described.
Is used as the rolled region for the number of times of compaction, and the area of the compacted region having the number of compactions of 1 is calculated by the arithmetic processing unit 17 by summing the areas of the microelements included in the region. . Regions 32a, 32 where the number of times of compaction is two
b, 32c, regions 33a, 33b, 3 where the number of times of compaction is three
Similar processing is performed for 3c. Then, the area of the rolled area for each rolling frequency is displayed on the CRT display 18 in, for example, a table format.
【００５５】一方、本実施形態に係る盛土転圧管理シス
テムにおいては、振動ローラ１ａ、１ｂ、１ｃに備えら
れた加速度計２０ａ、２０ｂ、２０ｃで振動輪２１ａ、
２１ｂ、２１ｃの鉛直方向加速度を計測する。On the other hand, in the embankment rolling compaction management system according to the present embodiment, the vibrating wheels 21a, 20b, 20c are provided by the accelerometers 20a, 20b, 20c provided on the vibrating rollers 1a, 1b, 1c.
The vertical acceleration of 21b and 21c is measured.
【００５６】次に、加速度計２０ａ、２０ｂ、２０ｃで
計測された振動輪２１ａ、２１ｂ、２１ｃの加速度時刻
歴データを、演算処理装置５、１７に内蔵されたＦＦＴ
アナライザでフーリエ解析して加速度スペクトルを算出
するとともに、算出された加速度スペクトルから卓越振
動数における加速度スペクトル（パワースペクトル）
を、図４に示すように基本（一次）振動数でのピーク値
Ａ、二次振動数でのピーク値Ｂ、三次振動数でのピーク
値Ｃとしてそれぞれ求め、しかる後に比率（Ｂ＋Ｃ）/
Ａを演算して締固め評価指標とする。Next, the acceleration time history data of the vibrating wheels 21a, 21b, 21c measured by the accelerometers 20a, 20b, 20c are combined with the FFT data stored in the arithmetic processing units 5, 17, respectively.
Fourier analysis is performed by an analyzer to calculate the acceleration spectrum, and the acceleration spectrum at the dominant frequency (power spectrum) is calculated from the calculated acceleration spectrum.
Are obtained as a peak value A at the fundamental (primary) frequency, a peak value B at the secondary frequency, and a peak value C at the tertiary frequency as shown in FIG. 4, and then the ratio (B + C) /
A is calculated and used as a compaction evaluation index.
【００５７】このような演算処理は、上述したＧＰＳ測
量データを用いることによって転圧位置ごと、すなわち
微小要素ごとに行い、次いで、微小要素ごとの締固め評
価指標を、移動側コンピュータ３ａ、３ｂ、３ｃの液晶
表示モニタ６や管理側コンピュータ４のＣＲＴディスプ
レイ１８に図２及び図３と同様に表示する。すなわち、
各微小要素ごとの締固め評価指標の値の大きさに応じ
て、図２及び図３と同様、領域３１、領域３２、領域３
３というように領域分けを行ってそれらの内側をそれぞ
れ青、水色、ピンクというように異なる色で塗り分ける
とともに、微小要素の大きさを格子状の破線で示し、振
動ローラ１ａを表す図形３４をその大きさや姿勢がわか
るように重ねて表示する。なお、その他表示に関する詳
細については、転圧回数の表示のさせ方と同様であるの
で、ここではその説明を省略する。Such arithmetic processing is performed for each compaction position, that is, for each micro element by using the above-described GPS survey data, and then the compaction evaluation index for each micro element is calculated by the moving-side computers 3a, 3b, The information is displayed on the liquid crystal display monitor 3c and the CRT display 18 of the management computer 4 in the same manner as in FIGS. That is,
According to the magnitude of the value of the compaction evaluation index for each microelement, as in FIG. 2 and FIG.
3 and the insides thereof are painted in different colors such as blue, light blue, and pink, respectively, and the size of the minute element is indicated by a grid-like broken line, and a figure 34 representing the vibrating roller 1a is shown. The display is superimposed so that its size and posture can be understood. In addition, other details regarding the display are the same as the method of displaying the number of times of compaction, and the description thereof is omitted here.
【００５８】このようにすると、土質性状等の局所的変
動要因や季節的変動要因が考慮された実際の締固め状況
が転圧位置ごとに把握されることとなり、盛土の品質を
より高い精度で管理することが可能となる。In this way, the actual compaction state taking into account local and seasonal fluctuation factors such as soil properties can be grasped for each compaction position, and the quality of the embankment can be determined with higher accuracy. It becomes possible to manage.
【００５９】なお、転圧回数や締固め評価指標を液晶表
示モニタ６やＣＲＴディスプレイ１８に表示するにあた
っては、これらをモニター等のウィンドウに左右若しく
は上下に並べて同時表示する、重ねて同時表示する、切
換表示するといった各種表示方法が考えられる。When the number of times of compaction and the compaction evaluation index are displayed on the liquid crystal display monitor 6 and the CRT display 18, they are displayed side by side on the monitor or the like, vertically or vertically, simultaneously, and displayed simultaneously. Various display methods such as switching display are conceivable.
【００６０】図５は、任意の転圧位置における締固め評
価指標の変化を転圧回数に関連付けた形で液晶表示モニ
タ６やＣＲＴディスプレイ１８に表示させた様子を示し
たものであり、かかる表示内容を見れば、従来の転圧回
数による管理を踏まえつつ、加速度データによる締固め
評価指標を用いた盛土の締固め管理を行うことが可能と
なる。ちなみに、同図に示したスペクトル比は、本実施
形態で言うところの締固め評価指標であり、転圧前にキ
ャリブレーションを行うことによって密度と関連付ける
ことができる。また、設計上要求される締固め密度を管
理基準密度として表示してあり、同図の例では、二回の
転圧で既に設計基準を上回っている。FIG. 5 shows a state in which a change in the compaction evaluation index at an arbitrary compaction position is displayed on the liquid crystal display monitor 6 or the CRT display 18 in a form associated with the number of compactions. From the content, it is possible to perform the compaction management of the embankment using the compaction evaluation index based on the acceleration data, based on the conventional management based on the number of times of compaction. Incidentally, the spectrum ratio shown in the figure is a compaction evaluation index referred to in the present embodiment, and can be associated with the density by performing calibration before compaction. In addition, the compaction density required for the design is displayed as the control reference density. In the example of the figure, two compactions already exceed the design reference.
【００６１】以上説明したように、本実施形態に係る盛
土転圧管理システムによれば、振動ローラ１ａ、１ｂ、
１ｃによる盛土の転圧状況及び締固め評価指標が正確に
しかも視覚的に把握されることとなり、転圧対象エリア
３５内で締固めが十分に行われている箇所とそうでない
箇所とを一目瞭然に見分けることができるようにしたの
で、転圧の進捗状況、すなわち締固め作業の出来高を精
度よく把握することが可能となる。As described above, according to the embankment rolling pressure management system according to the present embodiment, the vibrating rollers 1a, 1b,
The compaction state and compaction evaluation index of the embankment by 1c will be accurately and visually grasped, and the places where compaction is sufficiently performed and the places where compaction is not performed in the compaction target area 35 can be clearly seen at a glance. Since the discrimination can be performed, the progress of the compaction, that is, the amount of the compaction work can be accurately grasped.
【００６２】特に、本実施形態に係る盛土転圧管理シス
テムによれば、振動ローラ１ａ、１ｂ、１ｃに備えられ
た振動輪２１ａ、２１ｂ、２１ｃの鉛直方向加速度を加
速度計２０ａ、２０ｂ、２０ｃで計測し、それらの加速
度データから地盤の締固め評価指標を演算する一方、各
転圧位置をＧＰＳ測量データで特定しておくことによっ
て、演算された締固め評価指標を転圧位置ごとに液晶表
示モニタ６やＣＲＴディスプレイ１８に出力するように
したので、転圧回数から締固め状況を推定する従来方法
とは異なり、土質性状等の局所的変動要因や季節的変動
要因が考慮された実際の締固め状況が転圧位置ごとに把
握されることとなり、盛土の品質をより高い精度で管理
することが可能となる。In particular, according to the embankment rolling pressure management system according to the present embodiment, the vertical acceleration of the vibrating wheels 21a, 21b, 21c provided on the vibrating rollers 1a, 1b, 1c is measured by the accelerometers 20a, 20b, 20c. While measuring and calculating the compaction evaluation index of the ground from the acceleration data, each compaction position is specified by GPS survey data, and the calculated compaction evaluation index is displayed on a liquid crystal display for each compaction position. Since the output is output to the monitor 6 and the CRT display 18, unlike the conventional method of estimating the compaction state from the number of compaction times, actual compaction taking into account local variation factors such as soil properties and seasonal variation factors is performed. The state of compaction is grasped for each compaction position, and the quality of the embankment can be managed with higher accuracy.
【００６３】また、本実施形態に係る盛土転圧管理シス
テムによれば、各振動ローラ１ａ、１ｂ、１ｃに移動側
コンピュータ３ａ、３ｂ、３ｃを搭載するようにしたの
で、該振動ローラのオペレータが振動ローラ１ａ、１
ｂ、１ｃによる転圧回数や締固め評価指標を自ら知るこ
とが可能となり、各オペレータは、現場事務所からの指
示を受けずとも締固めが不十分な箇所に自ら移動し該箇
所を締め固めることができる。Further, according to the embankment rolling pressure management system according to the present embodiment, the moving computers 3a, 3b, 3c are mounted on the respective vibrating rollers 1a, 1b, 1c, so that the operator of the vibrating rollers is required. Vibrating rollers 1a, 1
It becomes possible to know the number of times of compaction and the compaction evaluation index by b and 1c, and each operator moves to a place where compaction is insufficient and compacts the place without receiving an instruction from the site office. be able to.
【００６４】また、本実施形態に係る盛土転圧管理シス
テムによれば、各振動ローラ１ａ、１ｂ、１ｃから離間
した位置に管理側コンピュータ４を設置するようにした
ので、管理側にて各振動ローラによる転圧状況を一元管
理することが可能となる。したがって、広い転圧対象エ
リア内を多数の振動ローラが走り回るような状況であっ
ても、各振動ローラ１ａ、１ｂ、１ｃによる転圧状況を
それら相互の位置関係を確認しながら一目で把握するこ
とができる。According to the embankment compaction pressure management system according to the present embodiment, the management computer 4 is installed at a position separated from each of the vibrating rollers 1a, 1b, and 1c. It is possible to centrally manage the state of rolling by the rollers. Therefore, even in a situation where a large number of vibrating rollers run around in a wide area to be compacted, it is necessary to grasp at a glance the state of compaction by the vibrating rollers 1a, 1b, 1c while confirming their mutual positional relationship. Can be.
【００６５】本実施形態では、加速度データから算出さ
れた締固め評価指標を転圧回数ととともにグラフィック
表示するようにしたが、かかる締固め評価指標は、本
来、地盤の弾性挙動を利用することによってその転圧位
置ごとの局所的変動要因が含まれた形で転圧位置ごとに
評価されるものであって、間接的とは言え、転圧位置ご
との締固め状況自体を把握できるものである。In the present embodiment, the compaction evaluation index calculated from the acceleration data is graphically displayed together with the number of times of compaction. However, the compaction evaluation index is originally based on the elastic behavior of the ground. It is evaluated for each compaction position in a way that includes local fluctuation factors for each compaction position. Although indirect, the compaction status itself for each compaction position can be grasped. .
【００６６】したがって、場合によっては、従来の転圧
回数に関する情報表示を省略し、加速度データから算出
された締固め評価指標だけを出力するようにしてもよ
い。Therefore, in some cases, the conventional information display regarding the number of times of compaction may be omitted, and only the compaction evaluation index calculated from the acceleration data may be output.
【００６７】また、本実施形態では、転圧状況を管理す
るコンピュータを転圧用移動体である振動ローラと該振
動ローラから離間した位置の両方に設置するようにした
が、必ずしも両方に設置する必要はなく、いずれか一方
にのみ設置するようにしてもよい。Further, in the present embodiment, the computer for managing the state of compaction is installed at both the vibrating roller, which is a moving body for compaction, and at a position separated from the vibrating roller. However, it may be installed only in one of them.
【００６８】また、本実施形態では、ＧＰＳ測量データ
を移動側コンピュータ３ａ、３ｂ、３ｃで演算処理する
とともに、該ＧＰＳ測量データを管理側コンピュータ４
に送ってこれを管理側コンピュータの演算処理装置１７
で別途演算処理するように構成したが、これに代えて各
移動側コンピュータ３ａ、３ｂ、３ｃで演算処理された
転圧回数や締固め評価指標の演算結果を管理側コンピュ
ータ４に送るようにしてもよい。かかる構成によれば、
管理側コンピュータ４の負担を軽減することが可能とな
る。In this embodiment, the GPS survey data is processed by the mobile computers 3a, 3b, and 3c, and the GPS survey data is processed by the management computer 4.
To the processing unit 17 of the management computer.
However, instead of this, the calculation results of the number of times of compaction and compaction evaluation index calculated by each of the moving-side computers 3a, 3b, and 3c are sent to the management-side computer 4. Is also good. According to such a configuration,
The burden on the management computer 4 can be reduced.
【００６９】また、本実施形態では特に言及しなかった
が、ＧＰＳ測量装置２ａ、２ｂ、２ｃで計測されたＧＰ
Ｓ測量データは、三次元座標上で評価されたものであっ
て鉛直方向成分を有する。したがって、かかるＧＰＳ測
量データを用いて盛土の高さを管理することも可能であ
ることは言うまでもない。Although not specifically mentioned in the present embodiment, the GP measured by the GPS surveying devices 2a, 2b, and 2c is used.
The S survey data is evaluated on three-dimensional coordinates and has a vertical component. Therefore, it goes without saying that the height of the embankment can be managed using the GPS survey data.
【００７０】また、本実施形態では、一例として振動ロ
ーラが３台の場合について説明したが、振動ローラの台
数は何台でもかまわないことは言うまでもない。Further, in the present embodiment, the case where the number of the vibrating rollers is three has been described as an example, but it goes without saying that the number of the vibrating rollers may be any number.
【００７１】（第２実施形態）(Second Embodiment)
【００７２】次に、第２実施形態について説明する。な
お、第１実施形態と実質的に同一の部品等については同
一の符号を付してその説明を省略する。Next, a second embodiment will be described. Note that components that are substantially the same as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
【００７３】第２実施形態に係る盛土転圧管理システム
も図１で説明した第１実施形態と同様、振動ローラ１
ａ、１ｂ、１ｃにＧＰＳ測量装置２ａ、２ｂ、２ｃをそ
れぞれ搭載し、該振動ローラの運転席には移動側コンピ
ュータ３ａ、３ｂ、３ｃを、振動ローラ１ａ、１ｂ、１
ｃと離間した位置には管理側コンピュータ４を設置する
とともに、各振動ローラ１ａ、１ｂ、１ｃの振動輪２１
ａ、２１ｂ、２１ｃに該振動輪の鉛直方向加速度を転圧
中に計測可能な加速度計２０ａ、２０ｂ、２０ｃをそれ
ぞれ取り付け、移動側コンピュータ３ａ、３ｂ、３ｃに
は演算処理手段としての演算処理装置４１を、管理側コ
ンピュータ４には演算処理手段としての演算処理装置４
２をそれぞれ設け、該演算処理装置にて加速度計２０
ａ、２０ｂ、２０ｃで計測された加速度データから転圧
位置における地盤の締固め評価指標をそれぞれ演算する
とともに、ＧＰＳ測量装置２ａ、２ｂ、２ｃで計測され
たＧＰＳ測量データを利用することによって演算結果で
ある締固め評価指標を転圧位置ごとに出力手段としての
液晶表示モニタ６とＣＲＴディスプレイ１８にそれぞれ
出力表示するようになっているが、第２実施形態に係る
演算処理装置４１及び演算処理装置４２には、図６に示
すように、加速度計２０ａ、２０ｂ、２０ｃで計測され
た加速度データから基本振動数成分を除去して修正加速
度データを出力するフィルタ４３と、計測加速度データ
と修正加速度データとをそれぞれ絶対値で積分して時間
平均を求める積分回路４４と、該積分回路で求められた
修正加速度データの積分値を計測加速度データの積分値
で除して締固め評価指標となる積分比率を算出する演算
部４５とを備える。The embankment rolling compaction management system according to the second embodiment is similar to the first embodiment described with reference to FIG.
a, 1b, and 1c are equipped with GPS surveying devices 2a, 2b, and 2c, respectively, and moving-side computers 3a, 3b, and 3c are provided in the driver's seat of the vibrating rollers, and
The management computer 4 is installed at a position apart from the vibration rollers 21a, 1b, and 1c.
Accelerometers 20a, 20b, and 20c capable of measuring the vertical acceleration of the vibrating wheel during rolling are attached to the a, 21b, and 21c, respectively, and the moving-side computers 3a, 3b, and 3c each have an arithmetic processing device as arithmetic processing means. The management computer 4 is provided with an arithmetic processing device 4 as arithmetic processing means.
2 are provided, and the accelerometer 20
a, 20b, and 20c, respectively, calculating the compaction evaluation index of the ground at the compaction position from the acceleration data, and using the GPS surveying data measured by the GPS surveying devices 2a, 2b, 2c to obtain the calculation result. The compaction evaluation index is output and displayed on the liquid crystal display monitor 6 and the CRT display 18 as output means for each of the rolling positions, but the arithmetic processing device 41 and the arithmetic processing device according to the second embodiment. As shown in FIG. 6, a filter 43 removes the fundamental frequency component from the acceleration data measured by the accelerometers 20a, 20b, and 20c and outputs corrected acceleration data. And an integrated circuit 44 for calculating the time average by integrating each of the absolute values with the absolute value, and the corrected acceleration data obtained by the integrated circuit. The integrated value is divided by the integrated value of the measured acceleration data and an arithmetic unit 45 for calculating an integral ratio as an Compaction metrics.
【００７４】なお、演算処理装置４１及び演算処理装置
４２は第１実施形態と同様、ＧＰＳ測量装置２ａ、２
ｂ、２ｃで計測されたＧＰＳ測量データを用いて転圧対
象エリア内の任意の転圧位置における振動ローラ１ａ、
１ｂ、１ｃの通過回数を転圧回数として計数する機能を
併せ持つとともに、かかる計数結果を液晶表示モニタ６
やＣＲＴディスプレイ１８にそれぞれ出力するようにな
っている。The arithmetic processing device 41 and the arithmetic processing device 42 are the same as those in the first embodiment.
b, using the GPS survey data measured in 2c, the vibrating roller 1a at an arbitrary rolling position in the rolling target area;
In addition to having a function of counting the number of passes of 1b and 1c as the number of times of rolling, the liquid crystal display monitor 6
And a CRT display 18.
【００７５】また、演算処理装置４１、４２は、転圧対
象エリアを微小要素にメッシュ分割して該微小要素ごと
に締固め評価指標の演算処理及び振動ローラ１ａ、１
ｂ、１ｃによる転圧回数の計数を行うとともに、演算処
理結果や計数結果を受け取った液晶表示モニタ６やＣＲ
Ｔディスプレイ１８は、微小要素をメッシュ状に表示す
るとともに各微小要素に該当する転圧位置での締固め評
価指標や転圧回数をその大きさや回数に応じて色分け表
示するようになっている。The arithmetic processing units 41 and 42 divide the area to be compacted into small elements by mesh and calculate the compaction evaluation index for each of the small elements, and perform the vibration roller 1a, 1
b, 1c, the liquid crystal display monitor 6 and the CR receiving the calculation processing result and the counting result.
The T display 18 displays the microelements in a mesh shape, and displays the compaction evaluation index and the number of times of compaction at the rolling position corresponding to each microelement in a color-coded manner according to the size and the number of times.
【００７６】ここで、ＧＰＳ測量、データの送受信、微
小要素、液晶表示モニタ６等での表示方法等に関する説
明については第１実施形態と同様であるのでその説明を
省略する。Here, the description about the GPS measurement, the transmission and reception of data, the minute elements, the display method on the liquid crystal display monitor 6 and the like is the same as that of the first embodiment, so that the description is omitted.
【００７７】本実施形態に係る盛土転圧管理システムに
おいても、ＧＰＳ測量データを用いて転圧対象エリア内
の任意位置における転圧回数を演算処理装置４１、４２
で計数し、その計数結果を第１実施形態と同様にして移
動側コンピュータ３ａ、３ｂ、３ｃの液晶表示モニタ６
や管理側コンピュータ４のＣＲＴディスプレイ１８に表
示するが（図２、図３参照）、本実施形態に係る盛土転
圧管理システムにおいては、加速度計２０ａ、２０ｂ、
２０ｃで計測された振動輪２１ａ、２１ｂ、２１ｃの加
速度時刻歴データ（図７(a)）を、積分回路４４にて絶
対値で積分、すなわち正負を別々に積分したものを総和
する形で積分して時間平均を求め、これを計測加速度デ
ータの積分値とする。これは、図７(b)に示す斜線領域
の面積を総和して時間ｔで割ることに相当する。In the embankment compaction management system according to the present embodiment, the number of times of compaction at an arbitrary position in the compaction target area is also calculated using the GPS survey data.
In the same manner as in the first embodiment, and the liquid crystal display monitor 6 of the mobile computer 3a, 3b, 3c.
And on the CRT display 18 of the management computer 4 (see FIGS. 2 and 3), but in the embankment compaction management system according to the present embodiment, the accelerometers 20a, 20b,
The acceleration time history data (FIG. 7 (a)) of the vibrating wheels 21a, 21b, 21c measured at 20c is integrated by the integration circuit 44 by an absolute value, that is, integrated by separately integrating positive and negative. To obtain a time average, and use this as an integral value of the measured acceleration data. This is equivalent to summing the areas of the hatched regions shown in FIG. 7B and dividing by the time t.
【００７８】一方、フィルタ４３を用いて計測加速度デ
ータ（同図(a)）から基本振動数成分を除去する。同図
(c)は、基本振動数成分が除去された修正加速度データ
を示したものであり、主として二次振動数成分及び三次
振動数成分が含まれている。On the other hand, the fundamental frequency component is removed from the measured acceleration data (FIG. 10A) by using the filter 43. Same figure
(c) shows corrected acceleration data from which the fundamental frequency component has been removed, and mainly includes a secondary frequency component and a tertiary frequency component.
【００７９】ここで、基本振動数成分を除去するフィル
タ操作を行うにあたっては、基本振動数を予め求めてお
く必要があるが、かかる基本振動数は、振動輪２１ａ、
２１ｂ、２１ｃに固有の値であるため、転圧開始前に一
度だけフィルタ４３に設定しておけば足りる。Here, when performing a filter operation for removing the fundamental frequency component, it is necessary to obtain the fundamental frequency in advance.
Since it is a value unique to 21b and 21c, it is sufficient to set the filter 43 only once before the start of the compaction.
【００８０】次に、修正加速度データを同様にして絶対
値で積分して時間平均を求め、これを修正加速度データ
の積分値とする（同図(d)）。Next, the corrected acceleration data is similarly integrated with the absolute value to obtain a time average, which is used as the integrated value of the corrected acceleration data (FIG. 10 (d)).
【００８１】次に、演算部４５にて修正加速度データの
積分値Ａ′を計測加速度データの積分値Ｂ′で除する、
すなわちＡ′／Ｂ′を演算して積分比率とし、これを盛
土の締固め評価指標とする。Next, the arithmetic unit 45 divides the integrated value A 'of the corrected acceleration data by the integrated value B' of the measured acceleration data.
That is, A '/ B' is calculated to obtain an integral ratio, which is used as an evaluation index for compaction of the embankment.
【００８２】このような演算処理は、上述したＧＰＳ測
量データを用いることによって転圧位置ごと、すなわち
微小要素ごとに行い、次いで、微小要素ごとの締固め評
価指標を、移動側コンピュータ３ａ、３ｂ、３ｃの液晶
表示モニタ６や管理側コンピュータ４のＣＲＴディスプ
レイ１８に図２及び図３と同様に表示する。すなわち、
各微小要素ごとの締固め評価指標の値の大きさに応じ
て、図２及び図３と同様、領域３１、領域３２、領域３
３というように領域分けを行ってそれらの内側をそれぞ
れ青、水色、ピンクというように異なる色で塗り分ける
とともに、微小要素の大きさを格子状の破線で示し、振
動ローラ１ａを表す図形３４をその大きさや姿勢がわか
るように重ねて表示する。Such an arithmetic processing is performed for each compaction position, that is, for each micro element by using the above-described GPS survey data, and then the compaction evaluation index for each micro element is calculated by the moving-side computers 3a, 3b, The information is displayed on the liquid crystal display monitor 3c and the CRT display 18 of the management computer 4 in the same manner as in FIGS. That is,
According to the magnitude of the value of the compaction evaluation index for each microelement, as in FIG. 2 and FIG.
3 and the insides thereof are painted in different colors such as blue, light blue, and pink, respectively, and the size of the minute element is indicated by a grid-like broken line, and a figure 34 representing the vibrating roller 1a is shown. The display is superimposed so that its size and posture can be understood.
【００８３】このようにすると、土質性状等の局所的変
動要因や季節的変動要因が考慮された実際の締固め状況
が転圧位置ごとに把握されることとなり、盛土の品質を
より高い精度で管理することが可能となる。In this way, the actual compaction state taking into account local and seasonal fluctuation factors such as soil properties can be grasped for each compaction position, and the quality of the embankment can be determined with higher accuracy. It becomes possible to manage.
【００８４】なお、第１実施形態と同様、任意の転圧位
置における締固め評価指標の変化を転圧回数に関連付け
た形で液晶表示モニタ６やＣＲＴディスプレイ１８に表
示させることができるが（図５参照）、ここではその説
明を省略する。As in the first embodiment, a change in the compaction evaluation index at an arbitrary compaction position can be displayed on the liquid crystal display monitor 6 or the CRT display 18 in a form associated with the number of compactions. 5), and the description is omitted here.
【００８５】以上説明したように、本実施形態に係る盛
土転圧管理システムによれば、加速度計２０ａ、２０
ｂ、２０ｃで計測された振動輪２１ａ、２１ｂ、２１ｃ
の加速度データを用いて盛土の締固め評価指標を演算す
るようにしたので、転圧回数から締固め状況を推定する
従来方法とは異なり、土質性状等の局所的変動要因や季
節的変動要因が考慮された実際の締固め状況が転圧位置
ごとに把握されることとなり、盛土の品質をより高い精
度で管理することが可能となる。As described above, according to the embankment compaction management system according to the present embodiment, the accelerometers 20a, 20a
Vibration wheels 21a, 21b, 21c measured at b, 20c
Since the compaction evaluation index of the embankment is calculated using the acceleration data of the embankment, unlike the conventional method of estimating the compaction status from the number of compaction times, local variation factors such as soil properties and seasonal variation factors The actual compaction situation considered is grasped for each compaction position, and the quality of the embankment can be managed with higher accuracy.
【００８６】特に、加速度計２０ａ、２０ｂ、２０ｃで
計測された振動輪２１ａ、２１ｂ、２１ｃの加速度時刻
歴データを積分回路４４にて絶対値で積分して時間平均
を求め、これを計測加速度データの積分値とする一方、
フィルタ４３を用いて計測加速度データから基本振動数
成分を除去し、次いで、修正加速度データを同様にして
絶対値で積分して時間平均を求め、これを修正加速度デ
ータの積分値とし、演算部４５にて修正加速度データの
積分値Ａ′を計測加速度データの積分値Ｂ′で除した
Ａ′／Ｂ′を盛土の締固め評価指標としたので、転圧中
に振動輪２１ａ、２１ｂ、２１ｃが地表から跳ね上がる
ような場合、例えばロック材料を転圧するような場合で
あっても、地盤からの反発エネルギーが修正加速度デー
タの積分値に反映されるため、従来のようなフーリエ解
析やパワースペクトル解析を行わずとも、土の締固め状
況を適切に評価することが可能となる。In particular, the acceleration time history data of the vibrating wheels 21a, 21b, 21c measured by the accelerometers 20a, 20b, 20c is integrated by the integration circuit 44 by an absolute value to obtain a time average, and this is calculated as the measured acceleration data. While the integral value of
The fundamental frequency component is removed from the measured acceleration data by using the filter 43, and then the corrected acceleration data is similarly integrated with the absolute value to obtain a time average, which is used as the integrated value of the corrected acceleration data. A / B 'obtained by dividing the integrated value A' of the corrected acceleration data by the integrated value B 'of the measured acceleration data was used as the compaction evaluation index of the embankment, so that the vibrating wheels 21a, 21b, and 21c during rolling compaction. Even in the case of jumping from the ground surface, for example, when compressing rock material, the repulsive energy from the ground is reflected in the integrated value of the corrected acceleration data, so conventional Fourier analysis and power spectrum analysis can be performed. Even without doing so, it is possible to properly evaluate the compaction status of the soil.
【００８７】また、加速度スペクトル（パワースペクト
ル）のピーク値の比率で土の締固め状況を評価する、Ｐ
ＳＤピーク法と呼ばれる従来手法では、振動輪２１ａ、
２１ｂ、２１ｃが地表から跳ね上がるような場合の解析
を十分な精度で行うことができなかったが、本実施形態
に係る盛土転圧管理システムによれば、上述したように
地盤からの反発エネルギーが修正加速度データの積分値
に反映されることとなるため、ロック材料を転圧するよ
うな場合にも十分な精度で土の締固め状況を評価するこ
とが可能となる。Further, the soil compaction state is evaluated by the ratio of the peak value of the acceleration spectrum (power spectrum).
In a conventional method called the SD peak method, the vibration wheel 21a,
Although the analysis in the case where 21b and 21c jump from the surface of the ground could not be performed with sufficient accuracy, according to the embankment rolling compaction management system according to the present embodiment, the repulsive energy from the ground was corrected as described above. Since this is reflected in the integral value of the acceleration data, the compaction state of the soil can be evaluated with sufficient accuracy even when the lock material is compacted.
【００８８】次に、本実施形態に係る盛土転圧管理シス
テムの作用効果を実験で確認したので、以下にその概要
を説明する。Next, the operation and effect of the embankment rolling compaction management system according to the present embodiment have been confirmed by experiments, and the outline thereof will be described below.
【００８９】実験は、ロックフィルダムの建設工事現場
における振動ローラによる転圧試験として行い、各転圧
ごとの実際の締固め密度をそのときの沈下量から評価す
るとともに、本実施形態にしたがって積分比率を演算し
た。The experiment was carried out as a rolling test using a vibrating roller at the construction site of a rock fill dam, and the actual compaction density for each compaction was evaluated from the amount of settlement at that time, and the integration ratio was determined according to the present embodiment. Was calculated.
【００９０】図８は、このような転圧回数ごとの現場密
度と本実施形態に係る方法（フィルタ透過法）による解
析結果とを従来のＰＳＤピーク法による結果とともに示
したグラフである。これらの結果から、本実施形態に係
る盛土転圧管理システムによれば、演算された積分比率
が現場密度ときわめて良好な相関関係を示し、盛土の品
質管理として非常に有効な手段となり得ることがわか
る。ちなみに、従来の解析手法であるＰＳＤピーク法で
は、ロック材料を転圧する際に発生する振動ローラの局
所的な跳ね上がりを適確にとらえることができないた
め、現場密度との相関性はきわめて悪いこともわかる。FIG. 8 is a graph showing the in-situ density for each number of compaction times and the analysis result by the method according to the present embodiment (filter transmission method) together with the result by the conventional PSD peak method. From these results, according to the embankment compaction management system according to the present embodiment, the calculated integration ratio shows a very good correlation with the site density, which can be a very effective means for quality control of the embankment. Understand. By the way, the PSD peak method, which is a conventional analysis method, cannot accurately detect the local jump of the vibrating roller that occurs when the lock material is rolled, so that the correlation with the field density may be extremely poor. Understand.
【００９１】なお、振動ローラ１ａ、１ｂ、１ｃによる
盛土の転圧状況及び締固め評価指標が正確にしかも視覚
的に把握されることとなり、転圧対象エリア３５内で締
固めが十分に行われている箇所とそうでない箇所とを一
目瞭然に見分けることができることができる点、各振動
ローラ１ａ、１ｂ、１ｃに移動側コンピュータ３ａ、３
ｂ、３ｃを搭載することによって該振動ローラのオペレ
ータが振動ローラ１ａ、１ｂ、１ｃによる転圧回数や締
固め評価指標を自ら知ることができる点、各振動ローラ
１ａ、１ｂ、１ｃから離間した位置に管理側コンピュー
タ４を設置することによって管理側にて各振動ローラに
よる転圧状況を一元管理することが可能となる点につい
ては、第１実施形態と同様であり、ここでは詳細な説明
を省略する。The state of compaction of the embankment by the vibrating rollers 1a, 1b, and 1c and the compaction evaluation index can be accurately and visually grasped, and compaction is sufficiently performed in the compaction target area 35. The point where it can be distinguished from the part where it is not so clearly can be distinguished at a glance, and the moving-side computers 3a, 3
b, 3c allows the operator of the vibrating roller to know the number of times of compaction by the vibrating rollers 1a, 1b, 1c and the compaction evaluation index, and positions separated from the vibrating rollers 1a, 1b, 1c. Is similar to the first embodiment in that the management side computer 4 is installed on the management side, so that the management side can centrally manage the state of rolling by the vibrating rollers, which is the same as in the first embodiment, and a detailed description is omitted here. I do.
【００９２】本実施形態では特に言及しなかったが、加
速度時刻歴データをはじめ、図７に示した各データを液
晶表示モニタ６等に適宜表示することができることは言
うまでもない。Although not particularly mentioned in the present embodiment, it goes without saying that the data shown in FIG. 7 including the acceleration time history data can be appropriately displayed on the liquid crystal display monitor 6 or the like.
【００９３】（第３実施形態）(Third Embodiment)
【００９４】次に、第３実施形態について説明する。な
お、上述の各実施形態と実質的に同一の部品等について
は同一の符号を付してその説明を省略する。Next, a third embodiment will be described. In addition, the same reference numerals are given to components and the like that are substantially the same as those in the above-described embodiments, and description thereof is omitted.
【００９５】第３実施形態に係る盛土転圧管理システム
も図１で説明した第１実施形態と同様、振動ローラ１
ａ、１ｂ、１ｃにＧＰＳ測量装置２ａ、２ｂ、２ｃをそ
れぞれ搭載し、該振動ローラの運転席には移動側コンピ
ュータ３ａ、３ｂ、３ｃを、振動ローラ１ａ、１ｂ、１
ｃと離間した位置には管理側コンピュータ４を設置する
とともに、各振動ローラ１ａ、１ｂ、１ｃの振動輪２１
ａ、２１ｂ、２１ｃに該振動輪の鉛直方向加速度を転圧
中に計測可能な加速度計２０ａ、２０ｂ、２０ｃをそれ
ぞれ取り付け、移動側コンピュータ３ａ、３ｂ、３ｃに
は演算処理手段としての演算処理装置５１を、管理側コ
ンピュータ４には演算処理手段としての演算処理装置５
２をそれぞれ設け、該演算処理装置にて加速度計２０
ａ、２０ｂ、２０ｃで計測された加速度データから転圧
位置における地盤の締固め評価指標をそれぞれ演算する
とともに、ＧＰＳ測量装置２ａ、２ｂ、２ｃで計測され
たＧＰＳ測量データを利用することによって演算結果で
ある締固め評価指標を転圧位置ごとに出力手段としての
液晶表示モニタ６とＣＲＴディスプレイ１８にそれぞれ
出力表示するようになっているが、第３実施形態に係る
演算処理装置５１及び演算処理装置５２には、図９に示
すように、加速度計２０ａ、２０ｂ、２０ｃで計測され
た加速度データから加速度スペクトルを求めるスペクト
ル解析手段としてのＦＦＴアナライザ５３と、求められ
た加速度スペクトルを一次推定ピーク振動数を含む第１
の周波数帯域で積分して相乗平均Ａ″を求めるとともに
二次推定ピーク振動数及び三次推定ピーク振動数を含む
第２の周波数帯域で加速度スペクトルを積分して相乗平
均Ｂ″を求め、該相乗平均Ｂ″を相乗平均Ａ″で除して
締固め評価指標となるピーク比率を算出する演算部５４
とを備える。The embankment rolling compaction management system according to the third embodiment is similar to the first embodiment described with reference to FIG.
a, 1b, and 1c are equipped with GPS surveying devices 2a, 2b, and 2c, respectively, and moving-side computers 3a, 3b, and 3c are provided in the driver's seat of the vibrating rollers, and
The management computer 4 is installed at a position apart from the vibration rollers 21a, 1b, and 1c.
Accelerometers 20a, 20b, and 20c capable of measuring the vertical acceleration of the vibrating wheel during rolling are attached to the a, 21b, and 21c, respectively, and the moving-side computers 3a, 3b, and 3c each have an arithmetic processing device as arithmetic processing means. 51 is provided in the management computer 4 as an arithmetic processing unit 5 as arithmetic processing means.
2 are provided, and the accelerometer 20
a, 20b, and 20c, respectively, calculating the compaction evaluation index of the ground at the compaction position from the acceleration data, and using the GPS surveying data measured by the GPS surveying devices 2a, 2b, 2c to obtain the calculation result. The compaction evaluation index is output and displayed on the liquid crystal display monitor 6 and the CRT display 18 as output means for each of the compaction positions. However, the arithmetic processing device 51 and the arithmetic processing device according to the third embodiment are displayed. 52, an FFT analyzer 53 as a spectrum analysis means for obtaining an acceleration spectrum from acceleration data measured by the accelerometers 20a, 20b, and 20c, and a primary estimated peak frequency as shown in FIG. The first containing
And a geometric mean A ″ is obtained by integrating the acceleration spectrum in a second frequency band including the secondary estimated peak frequency and the tertiary estimated peak frequency to obtain a geometric mean B ″. A calculation unit 54 that divides B ″ by the geometric mean A ″ to calculate a peak ratio serving as a compaction evaluation index.
And
【００９６】なお、演算処理装置５１及び演算処理装置
５２は第１実施形態と同様、ＧＰＳ測量装置２ａ、２
ｂ、２ｃで計測されたＧＰＳ測量データを用いて転圧対
象エリア内の任意の転圧位置における振動ローラ１ａ、
１ｂ、１ｃの通過回数を転圧回数として計数する機能を
併せ持つとともに、かかる計数結果を液晶表示モニタ６
やＣＲＴディスプレイ１８にそれぞれ出力するようにな
っている。The arithmetic processing units 51 and 52 are the same as in the first embodiment, and the GPS surveying units 2a, 2a
b, using the GPS survey data measured in 2c, the vibrating roller 1a at an arbitrary rolling position in the rolling target area;
In addition to having a function of counting the number of passes of 1b and 1c as the number of times of rolling, the liquid crystal display monitor 6
And a CRT display 18.
【００９７】また、演算処理装置５１、５２は、転圧対
象エリアを微小要素にメッシュ分割して該微小要素ごと
に締固め評価指標の演算処理及び振動ローラ１ａ、１
ｂ、１ｃによる転圧回数の計数を行うとともに、演算処
理結果や計数結果を受け取った液晶表示モニタ６やＣＲ
Ｔディスプレイ１８は、微小要素をメッシュ状に表示す
るとともに各微小要素に該当する転圧位置での締固め評
価指標や転圧回数をその大きさや回数に応じて色分け表
示するようになっている。The arithmetic processing units 51 and 52 divide the area to be compacted into small elements by mesh, calculate the compaction evaluation index for each of the small elements, and perform the vibration roller 1a, 1
b, 1c, the liquid crystal display monitor 6 and the CR receiving the calculation processing result and the counting result.
The T display 18 displays the microelements in a mesh shape, and displays the compaction evaluation index and the number of times of compaction at the rolling position corresponding to each microelement in a color-coded manner according to the size and the number of times.
【００９８】ここで、ＧＰＳ測量、データの送受信、微
小要素、液晶表示モニタ６等での表示方法等に関する説
明については第１実施形態と同様であるのでその説明を
省略する。Here, the description about the GPS survey, the transmission and reception of data, the minute elements, the display method on the liquid crystal display monitor 6 and the like is the same as that of the first embodiment, so that the description is omitted.
【００９９】本実施形態に係る盛土転圧管理システムに
おいても、ＧＰＳ測量データを用いて転圧対象エリア内
の任意位置における転圧回数を演算処理装置５１、５２
で計数し、その計数結果を第１実施形態と同様にして移
動側コンピュータ３ａ、３ｂ、３ｃの液晶表示モニタ６
や管理側コンピュータ４のＣＲＴディスプレイ１８に表
示するが（図２、図３参照）、本実施形態に係る盛土転
圧管理システムにおいては、加速度計２０ａ、２０ｂ、
２０ｃで計測された振動輪２１ａ、２１ｂ、２１ｃの加
速度データをＦＦＴアナライザ５３にてフーリエ変換し
て加速度スペクトルを求める。図１０(a)に求められた
加速度スペクトルを示す。In the embankment compaction management system according to the present embodiment, the number of times of compaction at an arbitrary position in the compaction target area is calculated using the GPS survey data.
In the same manner as in the first embodiment, and the liquid crystal display monitor 6 of the mobile computer 3a, 3b, 3c.
And on the CRT display 18 of the management computer 4 (see FIGS. 2 and 3), but in the embankment compaction management system according to the present embodiment, the accelerometers 20a, 20b,
The acceleration data of the vibration wheels 21a, 21b, 21c measured at 20c is Fourier-transformed by the FFT analyzer 53 to obtain an acceleration spectrum. FIG. 10A shows the obtained acceleration spectrum.
【０１００】次に、演算部５４にて加速度スペクトルを
一次推定ピーク振動数ｆ1を含む第１の周波数帯域で積
分する、すなわち同図に示す斜線領域６１の面積を求
め、その平方根をとって相乗平均Ａ″とする。Next, the acceleration spectrum is integrated in the first frequency band including the primary estimated peak frequency f1 by the calculation unit 54, that is, the area of the hatched area 61 shown in FIG. The geometric mean is A ″.
【０１０１】同様に、加速度スペクトルを二次推定ピー
ク振動数ｆ2及び三次推定ピーク振動数ｆ3を含む第２の
周波数帯域で積分する、すなわち同図に示す斜線領域６
２の面積を求め、その平方根をとって相乗平均Ｂ″とす
る。Similarly, the acceleration spectrum is integrated in the second frequency band including the secondary estimated peak frequency f2 and the tertiary estimated peak frequency f3 , that is, the hatched area 6 shown in FIG.
2 and the square root thereof is taken as the geometric mean B ″.
【０１０２】ここで、一次推定ピーク振動数ｆ1は、転
圧中に変動の可能性があるものの、一次ピーク振動数と
してとりあえず初期的に設定可能な振動数であり、例え
ば振動ローラ１ａ、１ｂ、１ｃ固有の振動数から評価す
ることができる。Here, the primary estimated peak frequency f1 is a frequency that can be initially set as the primary peak frequency although there is a possibility that the primary peak frequency f1 fluctuates during rolling. For example, the vibration rollers 1 a and 1 b , 1c.
【０１０３】また、第１の周波数帯域は、かかる変動が
あったとしても真の一次ピーク振動数が必ず含まれるこ
とになるであろう帯域であり、振動ローラ１ａ、１ｂ、
１ｃやアクチュエータの構造、仕様、性能等を考慮しつ
つ、必要に応じて試験を行った上、適宜定めればよい。
かかる第１の周波数帯域は、例えば一次推定ピーク振動
数ｆ1を中心として±５Ｈｚの範囲とすることができ
る。The first frequency band is a band in which the true primary peak frequency will always be included even if such a fluctuation occurs, and the vibration rollers 1a, 1b,
A test may be performed as necessary while considering the structure, specifications, performance, and the like of the actuator 1c and the actuator, and may be determined as appropriate.
Such a first frequency band can be, for example, in a range of ± 5 Hz around the primary estimated peak frequency f1 .
【０１０４】一方、二次推定ピーク振動数ｆ2及び三次
推定ピーク振動数ｆ3は、転圧中に変動の可能性がある
ものの、それぞれ二次ピーク振動数、三次ピーク振動数
としてとりあえず初期的に設定可能な振動数である。On the other hand, although the secondary estimated peak frequency f2 and the tertiary estimated peak frequency f3 may fluctuate during compaction, they are initially set as the secondary peak frequency and the tertiary peak frequency, respectively. Is the frequency that can be set.
【０１０５】また、第２の周波数帯域は、かかる変動が
あったとしても真の二次ピーク振動数や三次ピーク振動
数が必ず含まれることになるであろう帯域であり、締固
めに伴う地盤の弾性挙動の変化を考慮しつつ、必要に応
じて現地での転圧試験を行った上、適宜定めればよい。
かかる第２の周波数帯域は、例えば５０〜９０Ｈｚの範
囲とすることができる。The second frequency band is a band in which the true secondary peak frequency and the tertiary peak frequency will always be included even if such a fluctuation occurs, and In consideration of a change in the elastic behavior of the steel sheet, a rolling test may be performed on site if necessary, and the value may be determined as appropriate.
Such a second frequency band can be, for example, in the range of 50 to 90 Hz.
【０１０６】次に、演算部５４にて相乗平均Ｂ″を相乗
平均Ａ″で除する、すなわちＢ／Ａを演算してピーク比
率とし、これを盛土の締固め評価指標とする。Next, the arithmetic unit 54 divides the geometric mean B ″ by the geometric mean A ″, that is, calculates B / A to obtain a peak ratio, which is used as an evaluation index for compaction of the embankment.
【０１０７】このようにすると、基本ピーク振動数や二
次若しくは三次ピーク振動数に変動が生じたとしても、
第１の周波数帯域や第２の周波数帯域を適宜設定してお
けば、真のピーク振動数は、これらの帯域に必ず含まれ
ることとなり、加速度スペクトルにも真のピーク振動数
での値が反映される。In this way, even if the basic peak frequency or the secondary or tertiary peak frequency fluctuates,
If the first frequency band and the second frequency band are appropriately set, the true peak frequency is always included in these bands, and the value at the true peak frequency is reflected in the acceleration spectrum. Is done.
【０１０８】すなわち、図１０(b)に示すように、真の
一次ピーク振動数が仮に一次推定ピーク振動数ｆ1から
低周波側にずれてｆ1′になったとしても、かかる真の
一次ピーク振動数ｆ1′が第１の周波数帯域に含まれて
いるため、真の一次ピーク振動数ｆ1′における加速度
スペクトル値は、相乗平均Ａ″に反映される。That is, as shown in FIG. 10B, even if the true primary peak frequency is shifted to f1 ′ from the primary estimated peak frequency f1 toward the low frequency side, the true primary peak frequency becomes f1 ′. Since the peak frequency f1 ′ is included in the first frequency band, the acceleration spectrum value at the true primary peak frequency f1 ′ is reflected on the geometric mean A ″.
【０１０９】このような演算処理は、上述したＧＰＳ測
量データを用いることによって転圧位置ごと、すなわち
微小要素ごとに行い、次いで、微小要素ごとの締固め評
価指標を、移動側コンピュータ３ａ、３ｂ、３ｃの液晶
表示モニタ６や管理側コンピュータ４のＣＲＴディスプ
レイ１８に図２及び図３と同様に表示する。すなわち、
各微小要素ごとの締固め評価指標の値の大きさに応じ
て、図２及び図３と同様、領域３１、領域３２、領域３
３というように領域分けを行ってそれらの内側をそれぞ
れ青、水色、ピンクというように異なる色で塗り分ける
とともに、微小要素の大きさを格子状の破線で示し、振
動ローラ１ａを表す図形３４をその大きさや姿勢がわか
るように重ねて表示する。The above-described arithmetic processing is performed for each compaction position, that is, for each micro element by using the above-described GPS survey data, and then the compaction evaluation index for each micro element is calculated by the moving-side computers 3a, 3b, The information is displayed on the liquid crystal display monitor 3c and the CRT display 18 of the management computer 4 in the same manner as in FIGS. That is,
According to the magnitude of the value of the compaction evaluation index for each microelement, as in FIG. 2 and FIG.
3 and the insides thereof are painted in different colors such as blue, light blue, and pink, respectively, and the size of the minute element is indicated by a grid-like broken line, and a figure 34 representing the vibrating roller 1a is shown. The display is superimposed so that its size and posture can be understood.
【０１１０】このようにすると、土質性状等の局所的変
動要因や季節的変動要因が考慮された実際の締固め状況
が転圧位置ごとに把握されることとなり、盛土の品質を
より高い精度で管理することが可能となる。In this way, the actual compaction state taking into account local fluctuation factors such as soil properties and seasonal fluctuation factors can be grasped for each compaction position, and the quality of the embankment can be determined with higher accuracy. It becomes possible to manage.
【０１１１】なお、第１実施形態と同様、任意の転圧位
置における締固め評価指標の変化を転圧回数に関連付け
た形で液晶表示モニタ６やＣＲＴディスプレイ１８に表
示させることができるが（図５参照）、ここではその説
明を省略する。As in the first embodiment, a change in the compaction evaluation index at an arbitrary rolling position can be displayed on the liquid crystal display monitor 6 or the CRT display 18 in a form associated with the number of times of rolling. 5), and the description is omitted here.
【０１１２】以上説明したように、本実施形態に係る盛
土転圧管理システムによれば、加速度計２０ａ、２０
ｂ、２０ｃで計測された振動輪２１ａ、２１ｂ、２１ｃ
の加速度データを用いて盛土の締固め評価指標を演算す
るようにしたので、転圧回数から締固め状況を推定する
従来方法とは異なり、土質性状等の局所的変動要因や季
節的変動要因が考慮された実際の締固め状況が転圧位置
ごとに把握されることとなり、盛土の品質をより高い精
度で管理することが可能となる。As described above, according to the embankment compaction management system according to the present embodiment, the accelerometers 20a, 20a
Vibration wheels 21a, 21b, 21c measured at b, 20c
Since the compaction evaluation index of the embankment is calculated using the acceleration data of the embankment, unlike the conventional method of estimating the compaction status from the number of compaction times, local variation factors such as soil properties and seasonal variation factors The actual compaction situation considered is grasped for each compaction position, and the quality of the embankment can be managed with higher accuracy.
【０１１３】特に、演算部５４にて加速度スペクトルを
一次推定ピーク振動数ｆ1を含む第１の周波数帯域で積
分しその平方根をとって相乗平均Ａ″とするとともに、
二次推定ピーク振動数ｆ2及び三次推定ピーク振動数ｆ3
を含む第２の周波数帯域で積分し、その平方根をとって
相乗平均Ｂ″とし、相乗平均Ｂ″を相乗平均Ａ″で除し
て盛土の締固め評価指標としたので、基本ピーク振動数
や二次若しくは三次ピーク振動数に変動が生じたとして
も、第１の周波数帯域や第２の周波数帯域を適宜設定し
ておけば、真のピーク振動数は、これらの帯域に必ず含
まれることとなり、加速度スペクトルにも真のピーク振
動数での値が反映される。In particular, the arithmetic section 54 integrates the acceleration spectrum in the first frequency band including the primary estimated peak frequency f1 and takes the square root thereof to obtain the geometric mean A ″.
Secondary estimated peak frequency f2 and tertiary estimated peak frequency f3
And the square root thereof is taken as the geometric mean B ″, and the geometric mean B ″ is divided by the geometric mean A ″ to obtain the compaction evaluation index of the embankment. Even if the secondary or tertiary peak frequency fluctuates, if the first frequency band and the second frequency band are set appropriately, the true peak frequency will always be included in these bands. The value at the true peak frequency is also reflected in the acceleration spectrum.
【０１１４】したがって、振動ローラ１ａ、１ｂ、１ｃ
のアクチュエータの回転数が何らかの原因で変動した
り、転圧中に振動輪２１ａ、２１ｂ、２１ｃが地表から
跳ね上がるような場合、例えばロック材料を転圧するよ
うな場合であっても、土の締固め状況を適切に評価する
ことが可能となる。Therefore, the vibration rollers 1a, 1b, 1c
Even if the rotational speed of the actuator fluctuates for some reason or the vibrating wheels 21a, 21b, 21c jump off the ground surface during rolling, for example, when the rock material is rolled, compaction of the soil is performed. The situation can be evaluated appropriately.
【０１１５】また、従来のＰＳＤ解析手法でピーク比率
を精度よく求めようとすると、ピーク振動数の変動に対
応すべく、該ピーク振動数をそのつど正確に求める必要
があるが、処理すべきデータ量が膨大であるため、転圧
作業を行いながら解析を進めるのは実際にはきわめて困
難であった。In order to accurately determine the peak ratio by the conventional PSD analysis method, it is necessary to accurately determine the peak frequency in order to cope with the fluctuation of the peak frequency. Due to the enormous amount, it was actually extremely difficult to proceed with the analysis while performing the compaction work.
【０１１６】しかしながら、本実施形態に係る盛土転圧
管理システムによれば、演算部５４での演算中、ピーク
振動数を求める必要がないため、リアルタイム処理が可
能となり、土の締固めに関する品質を飛躍的に向上させ
ることができる。However, according to the embankment compaction management system according to the present embodiment, it is not necessary to obtain the peak frequency during the calculation in the calculation unit 54, so that real-time processing is possible, and the quality related to compaction of the soil is improved. It can be dramatically improved.
【０１１７】次に、本実施形態に係る盛土転圧管理シス
テムの作用効果を実験で確認したので、以下にその概要
を説明する。Next, the operation and effect of the embankment rolling compaction management system according to the present embodiment have been confirmed by experiments, and the outline thereof will be described below.
【０１１８】実験は、ロックフィルダムの建設工事現場
における振動ローラによる転圧試験として行い、各転圧
ごとの実際の締固め密度をそのときの沈下量から評価す
るとともに、本実施形態に係る土の締固め管理方法にし
たがってピーク比率を演算した。The experiment was performed as a rolling test using a vibrating roller at the construction site of a rock fill dam, and the actual compaction density for each rolling was evaluated based on the settlement amount at that time, and the soil of the present embodiment was evaluated. The peak ratio was calculated according to the compaction control method.
【０１１９】図１１は、このような転圧回数ごとの現場
密度と本実施形態に係る方法（帯域積分ピーク法）によ
る解析結果とを従来のＰＳＤピーク法による結果ととも
に示したグラフである。これらの結果から、本実施形態
に係る盛土転圧管理システムによれば、演算されたピー
ク比率が現場密度ときわめて良好な相関関係を示し、盛
土の品質管理として非常に有効な手段となり得ることが
わかる。ちなみに、従来の解析手法であるＰＳＤピーク
法では、ロック材料を転圧する際に発生する振動ローラ
の局所的な跳ね上がりを適確にとらえることができない
ため、現場密度との相関性はきわめて悪いこともわか
る。FIG. 11 is a graph showing the in-situ density for each number of compaction times and the analysis result by the method according to the present embodiment (band integral peak method) together with the result by the conventional PSD peak method. From these results, according to the embankment compaction management system according to the present embodiment, the calculated peak ratio shows a very good correlation with the site density, which can be a very effective means for quality control of the embankment. Understand. By the way, the PSD peak method, which is a conventional analysis method, cannot accurately detect the local jump of the vibrating roller that occurs when the lock material is rolled, so that the correlation with the field density may be extremely poor. Understand.
【０１２０】なお、振動ローラ１ａ、１ｂ、１ｃによる
盛土の転圧状況及び締固め評価指標が正確にしかも視覚
的に把握されることとなり、転圧対象エリア３５内で締
固めが十分に行われている箇所とそうでない箇所とを一
目瞭然に見分けることができることができる点、各振動
ローラ１ａ、１ｂ、１ｃに移動側コンピュータ３ａ、３
ｂ、３ｃを搭載することによって該振動ローラのオペレ
ータが振動ローラ１ａ、１ｂ、１ｃによる転圧回数や締
固め評価指標を自ら知ることができる点、各振動ローラ
１ａ、１ｂ、１ｃから離間した位置に管理側コンピュー
タ４を設置することによって管理側にて各振動ローラに
よる転圧状況を一元管理することが可能となる点につい
ては、第１実施形態と同様であり、ここでは詳細な説明
を省略する。The state of compaction of the embankment by the vibrating rollers 1a, 1b, and 1c and the compaction evaluation index can be accurately and visually grasped, and compaction is sufficiently performed in the compaction target area 35. The point where it can be distinguished from the part where it is not so clearly can be distinguished at a glance, and the moving-side computers 3a, 3
b, 3c allows the operator of the vibrating roller to know the number of times of compaction by the vibrating rollers 1a, 1b, 1c and the compaction evaluation index, and positions separated from the vibrating rollers 1a, 1b, 1c. Is similar to the first embodiment in that the management side computer 4 is installed on the management side, so that the management side can centrally manage the state of rolling by the vibrating rollers, which is the same as in the first embodiment, and a detailed description is omitted here. I do.
【０１２１】本実施形態では特に言及しなかったが、加
速度時刻歴データや加速度スペクトルを液晶表示モニタ
６等に適宜表示することができることは言うまでもな
い。Although not particularly mentioned in the present embodiment, it goes without saying that the acceleration time history data and the acceleration spectrum can be appropriately displayed on the liquid crystal display monitor 6 or the like.
【０１２２】[0122]
【発明の効果】以上述べたように、請求項１に係る本発
明の盛土転圧管理システムによれば、土質性状等の局所
的変動要因や季節的変動要因が考慮された実際の締固め
状況が転圧位置ごとに把握されることとなり、盛土の品
質をより高い精度で管理することが可能となる。As described above, according to the embankment compaction management system according to the first aspect of the present invention, the actual compaction state taking into account local fluctuation factors such as soil properties and seasonal fluctuation factors is considered. Can be grasped for each compaction position, and the quality of the embankment can be managed with higher accuracy.
【０１２３】また、請求項２に係る本発明の盛土転圧管
理システムによれば、転圧中に振動体が地表から跳ね上
がるような場合、例えばロック材料を転圧するような場
合であっても、地盤からの反発エネルギーが修正加速度
データの積分値に反映され、かくして、土の締固め状況
を簡単なデータ解析だけで適切に評価することが可能と
なるという効果も奏する。Further, according to the embankment compaction management system of the present invention, when the vibrating body jumps off the ground surface during compaction, for example, when the rock material is compacted, The repulsive energy from the ground is reflected in the integrated value of the corrected acceleration data, thus providing an effect that the compaction state of the soil can be appropriately evaluated only by a simple data analysis.
【０１２４】また、請求項３に係る本発明の盛土転圧管
理システムによれば、基本ピーク振動数や二次若しくは
三次ピーク振動数に変動が生じたとしても、第１の周波
数帯域や第２の周波数帯域を適宜設定しておけば、真の
ピーク振動数は、これらの周波数帯域に必ず含まれるこ
ととなり、加速度スペクトルにも真のピーク振動数での
値が反映されるという効果も奏する。According to the embankment rolling compaction management system of the third aspect of the present invention, even if the basic peak frequency or the secondary or tertiary peak frequency fluctuates, the first frequency band or the second If the frequency band is set appropriately, the true peak frequency will always be included in these frequency bands, and the effect that the value at the true peak frequency is reflected in the acceleration spectrum is also exerted.
【０１２５】また、請求項４に係る本発明の盛土転圧管
理システムによれば、加速度データを用いた手法、いわ
ば地盤の弾性挙動に基づく管理手法と転圧回数に基づく
管理手法とを併用することができるので、盛土の締固め
状況をより客観的に把握することが可能となるという効
果も奏する。According to the embankment compaction management system of the present invention, a technique using acceleration data, that is, a technique based on the elastic behavior of the ground and a technique based on the number of times of compaction are used together. Therefore, it is possible to more objectively grasp the compaction state of the embankment.
【０１２６】また、請求項５に係る本発明の盛土転圧管
理システムによれば、転圧用移動体のオペレータが該転
圧用移動体による締固め状況を自ら知ることができると
いう効果も奏する。Further, according to the embankment rolling compaction management system of the present invention, there is an effect that the operator of the compacting movable body can know the compaction state by the compacting movable body by himself.
【０１２７】また、請求項６に係る本発明の盛土転圧管
理システムによれば、管理側にて転圧用移動体による締
固め状況を管理することができるので、広い転圧対象エ
リア内を多数の転圧用移動体が走り回るような状況では
特に都合がよいという効果も奏する。Further, according to the embankment compaction management system of the present invention, since the compaction state by the compacting moving body can be managed on the management side, a large number of areas within the large compaction target area can be controlled. This is particularly advantageous in a situation in which the moving body for pressure rolling runs around.
【０１２８】[0128]
【図１】第１実施形態に係る盛土転圧管理システムのブ
ロック図。FIG. 1 is a block diagram of an embankment rolling compaction management system according to a first embodiment.
【図２】第１実施形態に係る盛土転圧管理システムにお
いて移動側コンピュータの液晶表示モニターに転圧回数
の計数結果を示した図。FIG. 2 is a diagram showing a result of counting the number of times of compaction on a liquid crystal display monitor of a mobile computer in the embankment compaction management system according to the first embodiment.
【図３】第１実施形態に係る盛土転圧管理システムにお
いて管理側コンピュータのＣＲＴディスプレイに転圧回
数の計数結果を示した図。FIG. 3 is a diagram showing a result of counting the number of times of compaction on a CRT display of a management computer in the embankment compaction management system according to the first embodiment;
【図４】第１実施形態に係る盛土転圧管理システムにお
いて加速度データから締固め評価指標を求める考え方を
示したグラフ。FIG. 4 is a graph showing a concept of obtaining a compaction evaluation index from acceleration data in the embankment compaction management system according to the first embodiment.
【図５】第１実施形態に係る盛土転圧管理システムにお
いて演算結果の表示形態の一例を示した図。FIG. 5 is a diagram showing an example of a display form of a calculation result in the embankment rolling compaction management system according to the first embodiment.
【図６】第２実施形態に係る盛土転圧管理システムにお
ける演算処理装置を示したブロック図。FIG. 6 is a block diagram showing an arithmetic processing unit in an embankment rolling compaction management system according to a second embodiment.
【図７】第２実施形態に係る盛土転圧管理システムにお
いて加速度データから締固め評価指標を求める手順を示
したグラフ。FIG. 7 is a graph showing a procedure for obtaining a compaction evaluation index from acceleration data in the embankment compaction management system according to the second embodiment.
【図８】第２実施形態に係る盛土転圧管理システムの作
用効果を示したグラフ。FIG. 8 is a graph showing the operation and effect of the embankment compaction management system according to the second embodiment.
【図９】第３実施形態に係る盛土転圧管理システムにお
ける演算処理装置を示したブロック図。FIG. 9 is a block diagram showing an arithmetic processing unit in an embankment rolling compaction management system according to a third embodiment.
【図１０】第３実施形態に係る盛土転圧管理システムに
おいて加速度データから締固め評価指標を求める手順を
示したグラフ。FIG. 10 is a graph showing a procedure for obtaining a compaction evaluation index from acceleration data in the embankment compaction management system according to the third embodiment.
【図１１】第３実施形態に係る盛土転圧管理システムの
作用効果を示したグラフ。FIG. 11 is a graph showing the operation and effect of the embankment rolling compaction management system according to the third embodiment.
１ａ、１ｂ、１ｃ 振動ローラ（転圧用
移動体） ２ａ、２ｂ、２ｃ ＧＰＳ測量装置（位
置測量手段） １２ ＧＰＳ測量装置（位
置測量手段） ２０ａ、２０ｂ、２０ｃ 加速度計 ２１ａ、２１ｂ、２１ｃ 振動輪（振動体） ５、１７ 演算処理装置（演算
処理手段） ６ 液晶表示モニタ（出
力手段） １８ ＣＲＴディスプレイ
（出力手段） ４１、４２ 演算処理装置（演算
処理手段） ４３ フィルタ ４４ 積分回路 ４５ 演算部 ５１、５２ 演算処理装置（演算
処理手段） ５３ ＦＦＴアナライザ
（スペクトル解析手段） ５４ 演算部1a, 1b, 1c Vibration roller (moving body for rolling) 2a, 2b, 2c GPS surveying device (position surveying means) 12 GPS surveying device (position surveying means) 20a, 20b, 20c Accelerometer 21a, 21b, 21c Vibrating wheel ( Vibrating body) 5, 17 Arithmetic processing unit (arithmetic processing unit) 6 Liquid crystal display monitor (output unit) 18 CRT display (output unit) 41, 42 Arithmetic processing unit (arithmetic processing unit) 43 Filter 44 Integrator circuit 45 Arithmetic unit 51, 52 Arithmetic processing unit (arithmetic processing means) 53 FFT analyzer (spectral analysis means) 54 arithmetic unit
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 栄次 兵庫県神戸市中央区西町35番地 株式会社 大林組神戸支店内 (72)発明者 市川 賀寿男 兵庫県神戸市中央区西町35番地 株式会社 大林組神戸支店内 Ｆターム(参考） 2D043 AA00 AB07 AC05 CA15 CB01 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Eiji Takahashi 35, Nishimachi, Chuo-ku, Kobe-shi, Hyogo Prefecture Inside Obayashi-gumi Kobe Branch Co., Ltd. F term (for reference) 2D043 AA00 AB07 AC05 CA15 CB01
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16252599AJP3460224B2 (en) | 1999-06-09 | 1999-06-09 | Embankment compaction management system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16252599AJP3460224B2 (en) | 1999-06-09 | 1999-06-09 | Embankment compaction management system |
| Publication Number | Publication Date |
|---|---|
| JP2000352044Atrue JP2000352044A (en) | 2000-12-19 |
| JP3460224B2 JP3460224B2 (en) | 2003-10-27 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16252599AExpired - Fee RelatedJP3460224B2 (en) | 1999-06-09 | 1999-06-09 | Embankment compaction management system |
| Country | Link |
|---|---|
| JP (1) | JP3460224B2 (en) |
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