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JP5984516B2 - Pipe repair structure and repair method - Google Patents

Pipe repair structure and repair method
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JP5984516B2
JP5984516B2JP2012127085AJP2012127085AJP5984516B2JP 5984516 B2JP5984516 B2JP 5984516B2JP 2012127085 AJP2012127085 AJP 2012127085AJP 2012127085 AJP2012127085 AJP 2012127085AJP 5984516 B2JP5984516 B2JP 5984516B2
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repair
peripheral surface
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inner peripheral
compression
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JP2013249936A (en
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伸吉 大岡
伸吉 大岡
張 満良
満良 張
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吉佳エンジニアリング株式会社
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Translated fromJapanese

本発明は、劣化した管路の内周面に圧縮材と補修材を配置して補修する補修構造と、劣化した管路を補修する補修工法と、に関するものである。  The present invention relates to a repair structure in which a compression material and a repair material are disposed on an inner peripheral surface of a deteriorated pipeline and repaired, and a repair method for repairing the deteriorated pipeline.

現在、下水道用の管路や工業用水用の管路或いは農業用水用の管路、等多くの管路が敷設されて使用されている。これらの管路は、使用期間の増加に伴って劣化し、内周面にコンクリートの骨材が露出したり、地盤沈下や地震等の影響を受けて管路を構成する管が継ぎ目で抜けるようなずれが生じたりすることがある。このように、劣化した管路は強度が低下する虞があり、内周面にライニングを施して補修するのが一般的である。  At present, many pipes such as pipes for sewers, pipes for industrial water, and pipes for agricultural water are laid and used. These pipes deteriorate as the period of use increases, so that concrete aggregates are exposed on the inner peripheral surface, and the pipes that make up the pipes are pulled out at seams due to the effects of land subsidence and earthquakes. Misalignment may occur. Thus, there is a possibility that the strength of the deteriorated pipe line may be reduced, and it is general to repair the pipe by lining the inner peripheral surface.

管路を補修するための補修方法として多くの提案がなされ、夫々実施されている。その中の一つに、補修すべき管路の全長にわたって、内周面に複数のセグメントを組み立てて構成した環状の補修材を配置し、管路の内周面と補修材との間の間隙にセメントミルクを充填して硬化させる方法がある(例えば、特許文献1参照)。この方法を採用して劣化した管路を補修した場合、硬化したセメントを介して管路とセグメントが一体化し、管路の強度を回復させることが可能である。  Many proposals have been made and implemented as repair methods for repairing pipelines. One of them is an annular repair material constructed by assembling a plurality of segments on the inner peripheral surface over the entire length of the pipeline to be repaired, and a gap between the inner peripheral surface of the pipeline and the repair material. There is a method in which cement milk is filled and cured (see, for example, Patent Document 1). When this method is used to repair a deteriorated pipeline, the pipeline and the segment are integrated through the hardened cement, and the strength of the pipeline can be recovered.

この補修方法では、セグメントは、補修すべき管路の内周面の径よりも小さい径を持つ円を複数の円弧に分割し、夫々の円弧に対応させた半径と幅寸法と厚さとを有し、内面は滑らかな面として構成されている。そして、所定数のセグメントを円周方向に接続して互いにボルトにより締結することで環状の補修材を構成し、この補修材を幅方向に並べてボルトにより締結することで管路の内部に配置することが可能である。  In this repair method, a segment has a radius, a width dimension, and a thickness corresponding to each arc by dividing a circle having a diameter smaller than the diameter of the inner peripheral surface of the pipe to be repaired into a plurality of arcs. The inner surface is configured as a smooth surface. Then, a predetermined number of segments are connected in the circumferential direction and fastened with bolts to form an annular repair material, and the repair materials are arranged in the width direction and fastened with bolts to be arranged inside the pipeline. It is possible.

また、補修すべき管路内に長尺状の補修材を繰り出して内周面に螺旋状に巻き付けて配置した後、内周面と補修材との間隙にセメントミルクを充填して硬化させる方法がある。この方法であっても、硬化したセメントと補修材とが一体化し、管路の強度を回復させることが可能である。  Also, after a long repair material is drawn out into the pipeline to be repaired and wound around the inner peripheral surface in a spiral manner, the cement milk is filled into the gap between the inner peripheral surface and the repair material and cured. There is. Even with this method, the hardened cement and the repair material are integrated, and the strength of the pipe line can be recovered.

この方法では、補修材は長尺状の合成樹脂の成形品からなり、管路の内周面に対向する面には、幅方向の両端部に夫々雄、雌の嵌合部と、これらの嵌合部の間に補強用のリブが形成されている。そして、長尺状の補修材を、両側の嵌合部を互いに嵌合させながら補修すべき管路内に螺旋状に繰り出すことで、管路の内周面に近接させて配置することが可能である。  In this method, the repair material is formed of a long synthetic resin molded product, and on the surface facing the inner peripheral surface of the pipe line, male and female fitting portions are provided at both ends in the width direction, respectively. A reinforcing rib is formed between the fitting portions. And it is possible to arrange the long repair material close to the inner peripheral surface of the pipeline by feeding it out into the pipeline to be repaired while fitting the fitting parts on both sides together It is.

特願平11−264356(特開2001−082677号公報)Japanese Patent Application No. 11-264356 (Japanese Patent Laid-Open No. 2001-082677)

上記各技術は夫々劣化した管路を補修する際に採用されているが、全く問題がないわけではない。即ち、補修すべき管路の内周面とセグメント又は補修材との間隙に裏込材(例えばセメントミルク)を充填する方法では、補修すべき管路の全長にわたって一様に裏込材を充填することが困難であり、充填ムラが生じる虞がある。この場合、補修した管路の強度にムラが生じる虞がある。  Each of the above technologies is employed when repairing a deteriorated pipeline, but it is not without problems. That is, in the method of filling the backing material (for example, cement milk) in the gap between the inner peripheral surface of the pipeline to be repaired and the segment or the repair material, the backing material is uniformly filled over the entire length of the pipeline to be repaired. It is difficult to do this, and there is a risk of uneven filling. In this case, the strength of the repaired pipeline may be uneven.

本発明の目的は、補修すべき管路の内周面と補修材との間に圧縮性と復元性を有する圧縮材を圧縮させて位置させることで、確実に一体化をはかることができる管路の補修構造と、補修工法を提供することにある。  An object of the present invention is to provide a tube that can be reliably integrated by compressing and positioning a compressive material having compressibility and restoration between the inner peripheral surface of a pipe line to be repaired and the repair material. The purpose is to provide repair structures and repair methods for roads.

上記課題を解決するために本発明に係る管路の補修構造は、複数の剛性を持った補修片を組み立てて環状に構成され、補修すべき管路の内部に全長にわたって配置されて該管路の内周面との間に隙間を形成する補修材と、内部に空隙を有し且つ圧縮性と復元性を有する自由状態に於ける厚さが補修すべき管路の内周面と前記補修材との間に形成された隙間の寸法よりも大きい圧縮材と、を有し、前記圧縮材は、一様に圧縮された状態で前記補修すべき管路の全長にわたって該補修すべき管路の内周面と前記補修材との間に形成された隙間に位置しているものである。
Repair structure of the conduit according to the present invention in order to solve the above problems, assembles the repair piece having a plurality of rigid configured annularlydisposedover the entire length in the interior of the to be repaired pipein the pipe a repair material to form a gap between the inner peripheral surface of the road, and the inner peripheral surface of theinterior has voids and compressibility and resiliency pipe in thickness to the free stateof chromatic should repair A compression material larger than the size of the gap formed between the repair material and the compression material should be repairedover the entire length of the pipeline to be repaired in auniformly compressed state. It is located in the clearance gap formed between the internal peripheral surface of a pipe line, and the said repair material.

上記管路の補修構造に於いて、前記圧縮材空隙に硬化剤が含浸されていることが好ましい。
In the pipe repair structure, it is preferable thata void in the compression material is impregnated with a curing agent.

また、上記管路の補修構造に於いて、前記圧縮材は、硬化剤が含浸されている含浸層と、硬化剤が含浸されることのない非含浸層と、を有することが好ましい。  In the pipe repair structure, the compression material preferably has an impregnated layer impregnated with a curing agent and a non-impregnated layer not impregnated with the curing agent.

また、上記管路の補修構造に於いて、前記補修材を構成する補修片は、環状に構成した補修材に外接する円を所定数に分割したときの円弧長と等しい円弧長を有し、且つ前記円の半径とは異なる半径を有することが好ましい。  Further, in the pipe repair structure, the repair piece constituting the repair material has an arc length equal to an arc length when a circle circumscribed by the annular repair material is divided into a predetermined number, And it is preferable to have a radius different from the radius of the circle.

また、上記何れかの管路の補修構造に於いて、前記補修材を構成する補修片の外周側の面に内部に空隙を有し且つ圧縮性と復元性を有する圧縮層が形成されていることが好ましく、更に、圧縮層空隙に硬化剤が含浸されていることが好ましい。
Further, in any one of the above-described pipe repair structures, a compression layer having avoid therein and having compressibility and restoration property is formed on the outer peripheral surface of the repair piece constituting the repair material. Further, it is preferable thata void in the compression layer is impregnated with a curing agent.

本発明に係る管路の補修工法は、補修すべき管路の全長にわたって該管路の内周面に内部に空隙を有し且つ圧縮性と復元性を有する圧縮材を配置して仮固定する工程と、前記補修すべき管路の内周面に配置された圧縮材の内部に於いて、複数の剛性を持った補修片を組み合わせて拡径することで環状の補修材を組み立てると共に、該環状の補修材によって前記圧縮材を補修すべき管路の内周面に一様に押圧させる工程と、前記環状の補修材を補修すべき管路の全長にわたって構成する工程と、を含むことを特徴とするものである。
In the pipe line repair method according to the present invention, a compressive material having avoid inside and having compressibility and resilience is arranged and temporarily fixed onthe inner peripheral surface of the pipe lineover theentire length of the pipe line to be repaired. In the inside of the compression material disposed on the inner peripheral surface of the process and the pipeline to be repaired, an annular repair material is assembled by expanding the diameter by combining repair pieces having a plurality of rigidity, Includinga step ofuniformly pressing the compressed material against the inner peripheral surface of the pipeline to be repaired by anannular repair material, and a step of configuring the annular repair material over the entire length of the pipeline to be repaired. It is a feature.

また、本発明に係る他の補修工法は、補修すべき管路の内周面が劣化部分を削除した面又は劣化部分を削除した面に吹付材を吹き付けた吹付層を形成した面からなり、該補修すべき管路の内部に於いて、剛性を有し且つ外周側の面に内部に空隙を有し且つ圧縮性と復元性を有する圧縮層が形成された所定数の補修片を組み合わせて拡径することで環状の補修材を組み立てると共に、該環状の補修材の外周側の面に形成された圧縮層を補修すべき管路の内周面に一様に押圧させ、且つ前記補修材を補修すべき管路の全長にわたって配置することを特徴とするものである。
In addition, another repair method according to the present invention comprises a surface on which the inner peripheral surface of the pipeline to be repaired has a surface on which the sprayed material is sprayed on the surface from which the deteriorated portion has been deleted or the surface from which the deteriorated portion has been deleted, In the inside of the pipe line to be repaired, a predetermined number of repair pieces having a compression layer having rigidity and agap on the outer peripheral surface and having a compression layer and a restoration property are combined. The annular repair material is assembled by expanding the diameter, and the compressed layer formed on the outer peripheral surface of the annular repair material isuniformly pressed against the inner peripheral surface of the pipe to be repaired, and the repair material those characterized thatyou arranged over the entire length of the conduit to be repaired.

本発明に係る管路の補修構造では、補修すべき管路の内部に剛性を持った補修片を組み立てて環状に構成した補修材を配置し、管路の内周面と補修材との間に形成された隙間に圧縮性と復元性を有する圧縮材を圧縮した状態で位置している。このため、圧縮材が有する復元性が発揮され、補修すべき管路の全長にわたって補修材とムラなく一体化させるでき、補修された管路に強度のムラが生じることがない。  In the pipeline repair structure according to the present invention, a repair material having an annular shape is assembled by assembling a repair piece having rigidity inside the pipeline to be repaired, and between the inner peripheral surface of the pipeline and the repair material. It is located in the state where the compression material which has compressibility and restoration nature was compressed in the crevice formed. For this reason, the restoring property which a compression material has is exhibited, it can be made to integrate with a repair material uniformly over the full length of a pipe line which should be repaired, and intensity unevenness does not arise in a repaired pipe line.

また、補修すべき管路の内周面と補修材との間に形成された隙間に位置する補修材が圧縮された状態を保持しているため、復元性が保持され、管路と補修材とが互いに相対的な移動の自由度を保持することができる。従って、地震時や地盤沈下等に起因して管路に径方向の力や円周方向の力、或いは管軸方向の力が作用して移動しようとしたとき、この移動を許容することができる。即ち、管路と補修材との相対的な移動の自由度を向上させることができる。  Moreover, since the repair material located in the gap formed between the inner peripheral surface of the pipeline to be repaired and the repair material is maintained in a compressed state, the restoration property is maintained, and the pipeline and the repair material are maintained. Can maintain a degree of freedom of movement relative to each other. Therefore, this movement can be allowed when a radial force, a circumferential force, or a pipe axis direction force acts on the pipe due to an earthquake or ground subsidence. . That is, the degree of freedom of relative movement between the pipe line and the repair material can be improved.

また、圧縮材が内部に空隙を有しており、この空隙に硬化剤を含浸させることによって、補修すべき管路と補修材とを強固に一体化することができる。  Moreover, the compression material has a space | gap inside, and the pipe line and repair material which should be repaired can be firmly integrated by making this space | gap impregnate a hardening | curing agent.

特に、圧縮材が、硬化剤を含浸させた含浸層と、硬化剤を含浸することのない非含浸層とを有することによって、含浸層が硬化した場合でも非含浸層は圧縮性と復元性を保持することとなり、補修すべき管路と補修材とを圧縮性と復元性を保持させた状態で一体化させることができる。  In particular, the compression material has an impregnated layer impregnated with a curing agent and a non-impregnated layer not impregnated with the curing agent, so that even when the impregnated layer is cured, the non-impregnated layer has compressibility and recoverability. Therefore, the pipeline to be repaired and the repair material can be integrated while maintaining compressibility and restoring property.

また、補修材を構成する個々の補修片が、前記補修材を構成する補修片は、環状に構成した補修材に外接する円を所定数に分割したときの円弧長と等しい円弧長を有し、且つ前記円の半径とは異なる半径を有することによって、所定数の補修片を連続させたとき、円周方向の端部どうしが突き合わさることがなく、互いに重なるか離隔することになる。このため、重なった端部どうしを円周方向に離隔させて、或いは離隔している端部どうしを接近させて環状の補修材を構成したとき、補修すべき管路の内周面と補修材との間に圧縮材が存在していると、この圧縮材を管路の内周面との間で圧縮することができる。  Further, each repair piece constituting the repair material has an arc length equal to the arc length when the circle circumscribing the annular repair material is divided into a predetermined number. In addition, by having a radius different from the radius of the circle, when a predetermined number of repair pieces are made continuous, the ends in the circumferential direction do not abut each other and overlap or separate from each other. For this reason, when an annular repair material is formed by separating the overlapping end portions in the circumferential direction or by bringing the separated end portions close to each other, the inner peripheral surface of the pipe to be repaired and the repair material If a compression material exists between the two, the compression material can be compressed between the inner peripheral surface of the pipe line.

また、補修材を構成する補修片の外周側の面に圧縮性と復元性を有する圧縮層が形成されることで、この圧縮層を圧縮材として機能させることが可能となり、部品点数を削減して補修を容易に行うことができる。  In addition, by forming a compression layer having compressibility and restoration on the outer peripheral surface of the repair piece constituting the repair material, it becomes possible to function this compression layer as a compression material, reducing the number of parts. Can be easily repaired.

また、補修すべき管路の内周面と補修材との間に、圧縮材及び圧縮層の二つの圧縮可能な層が形成される。このため、管路と補修材との一体化をよりムラなく確実に実現することができる。また、圧縮材として硬化剤を含浸させたものを採用しても、圧縮層が保持する復元性により、管路と補修材とをムラなく確実に一体化させることができ、管路と補修材との相対的な移動の自由度を保持することができる。  Further, two compressible layers of a compression material and a compression layer are formed between the inner peripheral surface of the pipe line to be repaired and the repair material. For this reason, integration with a pipe line and a repair material can be implement | achieved more reliably and more uniformly. In addition, even if a material impregnated with a curing agent is used as the compression material, the pipeline and the repair material can be reliably integrated without unevenness due to the resilience retained by the compression layer. The degree of freedom of relative movement can be maintained.

また、圧縮層が内部に空隙を有しており、この空隙に硬化剤が含浸されていることで、補修すべき管路と補修材とをより強固に一体化することができる。  Moreover, since the compression layer has voids inside and the voids are impregnated with the curing agent, the pipeline to be repaired and the repair material can be more firmly integrated.

本発明に係る管路の補修工法では、補修すべき管路の内周面に圧縮材を配置した後、所定数の剛性を持った補修片を組み合わせて拡径することで環状の補修材を組み立て、この過程で圧縮材を補修すべき管路の内周面に押圧させることができる。このため、補修すべき管路の全長にわたって、該管路と補修材とをムラなく一体化させることが可能となり、補修した管路にムラが生じることなく一様な強度を実現することができる。  In the pipe repairing method according to the present invention, after placing the compression material on the inner peripheral surface of the pipe to be repaired, an annular repair material is obtained by combining the repair pieces having a predetermined number of rigidity and expanding the diameter. In the process of assembling, the compressed material can be pressed against the inner peripheral surface of the pipeline to be repaired. For this reason, the pipe and the repair material can be integrated uniformly over the entire length of the pipe to be repaired, and a uniform strength can be realized without causing unevenness in the repaired pipe. .

また、本発明に係る他の補修工法では、補修すべき管路が劣化した既設の管路であっても、外周面に圧縮層が形成された所定数の補修片を組み立てた環状の補修材によって、該管路を補修することができる。特に、管路の内周面と補修材との間の隙間には圧縮層が位置することとなり、容易な施工で管路と補修材とをムラなく一体化させることができる。  Further, in another repair method according to the present invention, an annular repair material in which a predetermined number of repair pieces having a compression layer formed on the outer peripheral surface is assembled, even if the existing pipe line to be repaired is deteriorated Thus, the pipe line can be repaired. In particular, the compression layer is located in the gap between the inner peripheral surface of the pipe line and the repair material, and the pipe line and the repair material can be integrated uniformly with easy construction.

本実施例に係る補修構造を説明する図である。It is a figure explaining the repair structure concerning a present Example.環状の補修材を構成する補修片の構成を説明する三面図である。It is a three-view figure explaining the structure of the repair piece which comprises a cyclic | annular repair material.所定数の補修片を連続させて環状の補修材を組み立てる過程を説明する図である。It is a figure explaining the process of assembling a cyclic | annular repair material by making a predetermined number of repair pieces continue.本実施例に係る補修工法を説明する図である。It is a figure explaining the repair construction method concerning a present Example.本実施例に係る補修工法を説明する図である。It is a figure explaining the repair construction method concerning a present Example.圧縮材の他の例とこの圧縮材を用いた補修構造の例を説明する図である。It is a figure explaining the example of the repair structure using the other example of a compression material, and this compression material.

以下、本発明に係る補修構造の実施の形態について説明する。本発明の補修構造は、例えば下水道用の管路に代表される管路であって、長期間の使用により強度が低下し、或いは内周面が劣化した管路を補修する際に採用して有利である。特に、管路の内周面と補強材との間に位置する圧縮材が一様に圧縮することで、管路と補修材とがムラなく一体化し、管路の全長にわたってムラのない強度を発揮することが可能である。  Hereinafter, embodiments of the repair structure according to the present invention will be described. The repair structure of the present invention is a pipe line typified by, for example, a sewer pipe line, and is used when repairing a pipe line whose strength has decreased due to long-term use or whose inner peripheral surface has deteriorated. It is advantageous. In particular, the compression material located between the inner peripheral surface of the pipe and the reinforcing material is uniformly compressed, so that the pipe and the repair material are integrated uniformly, and there is no unevenness over the entire length of the pipe. It is possible to demonstrate.

更に、補修すべき管路の内周面と環状の補修材との間に形成された隙間に位置する圧縮材が、復元性を保持していることで、何等かの力の作用によって管路と補修材との間に相対的な移動が生じるような場合でも、この移動の自由度を保持することが可能である。即ち、硬化剤を含浸させた圧縮材を用いる場合には、補修材を外周面に圧縮層を設けた所定数の補修片によって構成することで、復元性を保持させることが可能である。また、含浸層と非含浸層との二層構造の圧縮材を用いる場合には、該圧縮材が単独で復元性を保持することが可能である。更に、補修材の外周面に設けた圧縮層に硬化剤を含浸させた場合には、硬化剤を含浸させることのない圧縮材を用いることで、復元性を保持することが可能である。  Furthermore, the compression material located in the gap formed between the inner peripheral surface of the pipeline to be repaired and the annular repair material retains the restoring property, so that the pipeline is caused by the action of some force. Even when relative movement occurs between the repair material and the repair material, it is possible to maintain this degree of freedom of movement. That is, when using a compression material impregnated with a curing agent, it is possible to maintain resilience by configuring the repair material with a predetermined number of repair pieces provided with a compression layer on the outer peripheral surface. Moreover, when using the compression material of the two-layer structure of an impregnation layer and a non-impregnation layer, it is possible for this compression material to hold | maintain resilience independently. Furthermore, when the compression layer provided on the outer peripheral surface of the repair material is impregnated with the curing agent, the restoration property can be maintained by using the compression material that is not impregnated with the curing agent.

本発明に於いて、補修すべき管路の用途は限定するものではなく、下水道用の管路や農業用水或いは工業用水用の管路に適用することが可能である。また、補修すべき管路を構成する管の材質も限定するものではなく、上記管路を構成する管に適用することが可能である。特に、コンクリート管や陶管等の管によって構成された管路に好ましく適用することが可能である。  In the present invention, the use of the pipeline to be repaired is not limited, and can be applied to a pipeline for sewerage, agricultural water, or industrial water. Moreover, the material of the pipe | tube which comprises the pipe line which should be repaired is not limited, It is possible to apply to the pipe | tube which comprises the said pipe line. In particular, the present invention can be preferably applied to a pipe line constituted by a pipe such as a concrete pipe or a ceramic pipe.

また、補修すべき管路の内周面とは、必ずしも該管路を構成する既設管の内表面そのものである必要はない。即ち、補修すべき管路の内表面の劣化状態に応じて適宜行われる、劣化部分を斫により削除した内表面、或いは斫により削除した面にモルタルや樹脂系モルタル等の吹付層を設けた内表面等の内周面を対象としている。従って、以下の説明で補修すべき管路の内周面とは、既設管の内周面そのもの、既設管の内周面を斫によって削除した斫面、既設管の内周面を斫によって削除した面に吹付層を設けた吹付面を含むものである。  Further, the inner peripheral surface of the pipe to be repaired does not necessarily need to be the inner surface itself of the existing pipe constituting the pipe. In other words, the inner surface where the deteriorated part is removed with a flaw, or a spray layer such as mortar or resin-based mortar is provided on the inner surface where the deteriorated part is removed with flaws, as appropriate depending on the deterioration state of the inner surface of the pipeline to be repaired The inner peripheral surface such as the surface is targeted. Therefore, the inner peripheral surface of the pipe line to be repaired in the following description is the inner peripheral surface of the existing pipe itself, the lower surface obtained by deleting the inner peripheral surface of the existing pipe with scissors, and the inner peripheral surface of the existing pipes deleted with scissors It includes a spray surface provided with a spray layer on the surface.

本発明に於いて、補修材は剛性を持った複数の補修片を組み立てて環状に構成されている。補修材を環状に構成する際に、補修片を何個用いるか、言い換えると、環状の補修材を何個の補修片に分割するか、は限定するものではなく、補修すべき管路の内部に於ける作業性を考慮して設定することが好ましい。  In the present invention, the repair material is formed in an annular shape by assembling a plurality of repair pieces having rigidity. The number of repair pieces used in the construction of the repair material in an annular shape, in other words, the number of repair pieces in the annular repair material is not limited, and the interior of the pipe to be repaired is not limited. It is preferable to set in consideration of workability in the above.

また、環状の補修材を構成する複数の補修片が同一の形状であるか否か、即ち、補修片が補修材を等角度で分割したものであるか否か、は限定するものではなく、複数の補修片が同一の形状を有していても良く、異なる形状であっても良い。例えば、円弧長の大きい補修片と、円弧長の小さい補修片を形成しておき、所定数の補修片を連続させて環状の補修材を構成する際には、底部に対応する位置に円弧長の大きい補修片を配置し、この補修片に円弧長の小さい補修片を連続させて環状の補修材を構成することが可能である。何れにしても、所定数の補修片を円周方向に連続させて組み立てたとき、補修すべき管路の内周面の径に対応した径を持つ環状の補修材を構成し得るものであれば良い。  Further, whether or not the plurality of repair pieces constituting the annular repair material have the same shape, that is, whether or not the repair piece is obtained by dividing the repair material at an equal angle, is not limited, The plurality of repair pieces may have the same shape or different shapes. For example, when a repair piece having a large arc length and a repair piece having a small arc length are formed and a predetermined number of repair pieces are continuously formed to form an annular repair material, the arc length is set at a position corresponding to the bottom. It is possible to arrange an annular repair material by arranging a repair piece having a large length and continuing a repair piece having a small arc length to the repair piece. In any case, when a predetermined number of repair pieces are continuously assembled in the circumferential direction, an annular repair material having a diameter corresponding to the diameter of the inner peripheral surface of the pipeline to be repaired can be configured. It ’s fine.

特に、個々の補修片が、環状に構成した補修材に外接する円を所定数に分割したときの円弧長(全ての補修片の円弧長が等しい必要はない)と等しい円弧長を有し、且つ前記円の半径とは異なる半径を有することが好ましい。即ち、補修片は、円弧の長さは環状の補修材の外接円を所定数に分割したときの円弧長と等しく、半径寸法は環状の補修材の半径寸法よりも小さいか、大きいことが好ましい。  In particular, each repair piece has an arc length equal to the arc length when the circle circumscribing the annularly constructed repair material is divided into a predetermined number (the arc length of all repair pieces need not be equal), And it is preferable to have a radius different from the radius of the circle. That is, the length of the arc of the repair piece is equal to the arc length when the circumscribed circle of the annular repair material is divided into a predetermined number, and the radial dimension is preferably smaller or larger than the radial dimension of the annular repair material. .

本発明に於いて、環状に構成された補修材の半径と、補修片の半径とが異なる。このため、所定数の補修片を組み立てて環状の補修材を構成したとき、この補修材の外周面は必ずしも真円とはならない。このため、補修片の半径の基準を環状に構成された補修材の外接円とすることが好ましい。  In the present invention, the radius of the repair material formed in an annular shape is different from the radius of the repair piece. For this reason, when a predetermined number of repair pieces are assembled to form an annular repair material, the outer peripheral surface of the repair material is not necessarily a perfect circle. For this reason, it is preferable that the reference | standard of the radius of a repair piece shall be the circumscribed circle of the repair material comprised cyclically | annularly.

上記の如く形成された所定数の補修片を円周方向に沿って連続させたとき、連続した補修片の両端部分は、小さい半径の補修片の場合互いに重なり合い、大きい半径の補修片の場合互いに離隔した状態となる。即ち、所定数の補修片を単に連続させただけでは、環状の補修材を構成することが不可能である。  When a predetermined number of repair pieces formed as described above are continued along the circumferential direction, both end portions of the continuous repair pieces overlap with each other in the case of a repair piece with a small radius, and with each other in the case of a repair piece with a large radius. It becomes a separated state. That is, it is impossible to form an annular repair material simply by continuing a predetermined number of repair pieces.

このため、互いに重なり合い、或いは離隔している端部に円周方向の力を作用させて、連続させた補修片を拡径して両端部を突き合せることで環状の補修材を構成し、或いは連続させた補修片を縮径して両端部を突き合せることで環状の補修材を構成することが可能である。そして、連続させた補修片を拡径して環状の補修材を構成する場合には、拡径する過程で圧縮材を圧縮することが可能であり、縮径して環状の補修材を構成する場合には、補修材の反発力によって圧縮材を圧縮することが可能である。  For this reason, an annular repair material is formed by applying a circumferential force to the overlapping or spaced apart end portions, expanding the diameter of the continuous repair pieces, and abutting both end portions, or It is possible to construct an annular repair material by reducing the diameter of a continuous repair piece and butting both ends. And when expanding the diameter of the continuous repair piece and constituting an annular repair material, it is possible to compress the compression material in the process of expanding the diameter, and reducing the diameter to constitute the annular repair material. In some cases, the compression material can be compressed by the repulsive force of the repair material.

補修片は剛性を有することが必要であるが、材質を限定するものではない。また、単に剛性が有れば良いというものでもなく、環状の補修材を構成したとき、該補修材の外周面と補修すべき管路の内周面との間に略一定の隙間を形成し得る形状であることが好ましい。即ち、環状の補修材を構成する補修片は外周面が平滑な面に形成されていることが好ましく、このような補修片を用いることによって、環状に構成された補修材の外周面は凹凸がなく、補修すべき管路の内周面との間に略一定の隙間を形成することが可能となる。  The repair piece needs to have rigidity, but the material is not limited. In addition, it is not just a matter of rigidity, and when an annular repair material is configured, a substantially constant gap is formed between the outer peripheral surface of the repair material and the inner peripheral surface of the pipe to be repaired. It is preferable that the shape is obtained. That is, the repair piece constituting the annular repair material is preferably formed with a smooth outer peripheral surface, and by using such a repair piece, the outer peripheral surface of the annular repair material is uneven. In other words, a substantially constant gap can be formed between the inner peripheral surface of the pipeline to be repaired.

上記の如く、補修すべき管路の内周面と環状に構成された補修材との間に略一定の隙間を形成することによって、この隙間に位置する圧縮材を略均等に圧縮することが可能となり、ムラなく一体化することが可能となる。  As described above, by forming a substantially constant gap between the inner peripheral surface of the pipeline to be repaired and the repair material configured in an annular shape, the compression material positioned in the gap can be compressed substantially uniformly. It becomes possible, and it becomes possible to integrate evenly.

例えば、円弧状の表面板の外周面側に縦横に形成したリブによって剛性を発揮させる従来のセグメントの場合、所定数のセグメントを組み立てて構成した環状の部材の外周面には複数のリブが起立して複数の窪みが生じることになる。このため、補修すべき管路の内周面とセグメントの間に圧縮材を位置させたとしても、該圧縮材が一様に圧縮することがなく、ムラなく一体化することがない。しかし、このようなセグメントであっても、起立したリブの頂部を板材によって連続させて全体の形状が板状(パネル状)に形成されていれば用いることは可能である。  For example, in the case of a conventional segment in which rigidity is exhibited by ribs formed vertically and horizontally on the outer peripheral surface side of an arc-shaped surface plate, a plurality of ribs stand on the outer peripheral surface of an annular member formed by assembling a predetermined number of segments. Thus, a plurality of depressions are generated. For this reason, even if the compression material is positioned between the inner peripheral surface of the pipe line to be repaired and the segment, the compression material is not uniformly compressed and is not uniformly integrated. However, even such a segment can be used as long as the top of the standing rib is made continuous by a plate material so that the overall shape is formed in a plate shape (panel shape).

補修片を構成する材質について限定するものではなく、合成樹脂や鋼材等を選択的に採用することが可能である。特に、製造の容易さ、製品の剛性等の条件を考慮すると、硬化性樹脂を含浸させた繊維基材を目的の補修片の形状に成形して硬化させたFRPの成形品や、ウレタン等の高い強度を有する合成樹脂を成形した成形品であると好ましい。  It does not limit about the material which comprises a repair piece, It is possible to employ | adopt synthetic resin, steel materials, etc. selectively. In particular, considering conditions such as ease of manufacture and product rigidity, FRP molded products obtained by molding a cured fiber base impregnated with a curable resin into a desired repair piece shape, urethane, etc. A molded article obtained by molding a synthetic resin having high strength is preferable.

補修片の外周面が圧縮性と復元性を有する圧縮層であると好ましい。この圧縮層は圧縮性と復元性とを有することから、圧縮材として機能させることが可能であり、且つ圧縮材とは異なる単なる圧縮層として機能させることも可能である。即ち、圧縮層の厚さを充分に大きくすることによって補修すべき管路の内周面と環状の補修材との間に形成された隙間に位置する圧縮材としての機能を発揮することが可能である。また、補修すべき管路の内周面と環状に構成された補修材との間に形成された隙間に圧縮材を位置させる際に、圧縮材を一様に押圧する機能を発揮することが可能である。  The outer peripheral surface of the repair piece is preferably a compressed layer having compressibility and restoration property. Since this compression layer has compressibility and restoration property, it can function as a compression material, and can also function as a simple compression layer different from the compression material. In other words, by sufficiently increasing the thickness of the compression layer, it is possible to exert a function as a compression material located in a gap formed between the inner peripheral surface of the pipeline to be repaired and the annular repair material. It is. In addition, when the compression material is positioned in a gap formed between the inner peripheral surface of the pipeline to be repaired and the repair material configured in an annular shape, the function of uniformly pressing the compression material may be exhibited. Is possible.

補修片の外周面に形成された圧縮層の構成は限定するものではなく、補修片の外周面に弾性体を接着や溶着等の手段で一体化させたものであって良い。このため、補修片の本体部分を構成する材料と圧縮層を構成する材料とが同じである必要はなく、例えば補修片の本体部分をFRP成形体とし、圧縮層を硬質ウレタンとすることが可能である。特に、圧縮層は内部に空隙を有していることが好ましく、この場合、空隙に硬化剤を含浸させておくことが可能となる。  The configuration of the compression layer formed on the outer peripheral surface of the repair piece is not limited, and an elastic body may be integrated with the outer peripheral surface of the repair piece by means such as adhesion or welding. For this reason, it is not necessary that the material constituting the main body part of the repair piece and the material constituting the compression layer are the same. For example, the main body part of the repair piece can be an FRP molded body and the compression layer can be hard urethane. It is. In particular, the compressed layer preferably has voids inside, and in this case, the voids can be impregnated with a curing agent.

補修すべき管路の内周面と環状に構成された補修材との隙間に位置する圧縮材は、圧縮性と復元性とを有し、自由状態での厚さは前記隙間よりも大きい。圧縮材としてはこのような性質を持ったものであれば採用することが可能であり、材質を限定するものではない。このような性質を有するものとして、例えば不織布や合成樹脂の発泡体等があり、何れも好ましく採用することが可能である。The compression material located in the gap between the inner peripheral surface of the pipe line to be repaired and the repair material formed in an annular shape has compressibility and restoration property, and the thickness in a free state is larger than the gap. Any material having such properties can be used as the compression material, and the material is not limited. As having such properties, for example, there is afoam and the like of the nonwoven fabric or synthetic resin, all of which can be preferably employed.

圧縮材の形状は特に限定するものではなく、長尺のシート状に形成されたもの、補修すべき管路の内周面の径に応じた幅或いは長さを有するシート状に形成されたもの、等を用いることが可能である。また、圧縮材は必ずしも単独の圧縮材(例えばシート)として形成されている必要はなく、補修片の外周面側に一体的に設けて圧縮層として機能させても良い。  The shape of the compression material is not particularly limited, and is formed into a long sheet shape, or formed into a sheet shape having a width or length corresponding to the diameter of the inner peripheral surface of the pipeline to be repaired. , Etc. can be used. Further, the compression material is not necessarily formed as a single compression material (for example, a sheet), and may be provided integrally on the outer peripheral surface side of the repair piece to function as a compression layer.

圧縮材としては、内部に空隙を有していることが好ましく、この空隙に硬化剤を含浸させておくことが好ましい。このような圧縮材としては、不織布(フェルト)を好適に用いることが可能である。  As a compression material, it is preferable to have a space | gap inside, and it is preferable to make this space | gap impregnate a hardening | curing agent. As such a compression material, a nonwoven fabric (felt) can be suitably used.

硬化剤を含浸した圧縮材は硬化剤の硬化に伴って硬化するため、補修すべき管路の内周面と環状に構成された補修材との間に硬化した圧縮材が位置することとなる。このため、管路、補修材、圧縮材の何れも硬化したものとなり、互いの移動の自由度が低下する虞がある。この場合、環状の補修材として、外周側の面に圧縮層が形成された補修片によって構成した補修材を用いることが好ましい。  Since the compression material impregnated with the curing agent is cured with the curing of the curing agent, the cured compression material is positioned between the inner peripheral surface of the pipeline to be repaired and the repair material configured in an annular shape. . For this reason, all of a pipe line, a repair material, and a compression material will be hardened | cured, and there exists a possibility that the freedom degree of a mutual movement may fall. In this case, it is preferable to use a repair material constituted by a repair piece in which a compression layer is formed on the outer peripheral surface as the annular repair material.

また、圧縮材に硬化剤を含浸させる際に、厚さ方向の一方の面側に硬化剤を含浸させた含浸層を形成し、他方の面側に硬化剤を含浸させることのない非含浸層を形成することが好ましい。このように、圧縮材を、硬化させた層と、硬化することのない層との二層とすることで、補修すべき管路の内周面と圧縮材及び補修材との間に、圧縮性と復元性を有する層を形成しておくことが可能であり、互いの移動の自由度を保持させることが可能となる。  Further, when impregnating the hardener with the compression material, an impregnated layer impregnated with the hardener is formed on one surface side in the thickness direction, and the non-impregnated layer is not impregnated with the hardener on the other surface side. Is preferably formed. Thus, the compression material is compressed between the inner peripheral surface of the pipe line to be repaired and the compression material and the repair material by making the compression material into two layers of the hardened layer and the layer that does not harden. It is possible to form a layer having a property and a restoring property, and it is possible to maintain a degree of freedom of mutual movement.

含浸層と非含浸層とを有する圧縮材を形成する場合、1枚の不織布の一方の面側に硬化剤を含浸させて含浸層とし、他方の面側には硬化剤を含浸させずに非含浸層とすることが可能である。  When forming a compressed material having an impregnated layer and a non-impregnated layer, one side of one nonwoven fabric is impregnated with a curing agent to form an impregnated layer, and the other side is impregnated without impregnating with a curing agent. It can be an impregnated layer.

しかし、圧縮材を必ずしも1枚の不織布によって構成する必要はなく、硬化剤を含浸させた不織布と、硬化剤を含浸させることのない不織布とを積層することで構成しても良い。更に、圧縮材を不織布のみによって構成する必要もなく、硬化剤を含浸させた不織布からなる含浸層と、硬化剤を含浸させることなく圧縮性と復元性を有する例えば硬質ウレタンからなる非含浸層と、を積層して構成することも可能である。  However, the compression material is not necessarily constituted by a single nonwoven fabric, and may be constituted by laminating a nonwoven fabric impregnated with a curing agent and a nonwoven fabric not impregnated with the curing agent. Furthermore, there is no need for the compression material to be composed only of a nonwoven fabric, an impregnation layer made of a nonwoven fabric impregnated with a curing agent, and a non-impregnation layer made of, for example, hard urethane having compressibility and restoration without impregnating the curing agent. It is also possible to configure by stacking.

本発明の管路の補修構造に於ける補修すべき管路の内周面と環状の補修材との間に形成された隙間に圧縮材を圧縮させた状態で位置させる方法は限定するものではない。即ち、本発明に係る管路の補修工法以外の方法であっても本発明の補修構造を実現することが可能であり、本発明の補修構造を実現する方法を本発明の補修工法にのみ限定するものではない。  The method of positioning the compressed material in the compressed state in the gap formed between the inner peripheral surface of the pipeline to be repaired and the annular repair material in the pipeline repair structure of the present invention is not limited. Absent. That is, the repair structure of the present invention can be realized even by a method other than the pipe repair method according to the present invention, and the method of realizing the repair structure of the present invention is limited to the repair method of the present invention only. Not what you want.

本発明の補修構造を実現するための方法として、外周面に圧縮層を設けた補修片によって構成した環状の補修材を用いる方法がある。この場合、圧縮層の厚さは補修すべき管路の内周面と補修材との間に形成される隙間よりも大きいことが必要である。そして、補修すべき管路の内部で所定数の補修片を組み立てて補修材を構成する際に、個々の補修片の外周面に設けられた圧縮層が管路の内周面に圧接し、これにより、圧縮層は復元性を保持した状態で圧縮して隙間に位置することになる。  As a method for realizing the repair structure of the present invention, there is a method of using an annular repair material constituted by a repair piece provided with a compression layer on the outer peripheral surface. In this case, the thickness of the compression layer needs to be larger than the gap formed between the inner peripheral surface of the pipeline to be repaired and the repair material. And, when a repair material is constructed by assembling a predetermined number of repair pieces inside the pipeline to be repaired, the compression layer provided on the outer peripheral surface of each repair piece is pressed against the inner peripheral surface of the pipeline, As a result, the compression layer is compressed and positioned in the gap while maintaining the restoring property.

上記の如く、補修片の外周面(環状の補修材の外周面)に設けた圧縮層を補修すべき管路の内周面と補修材との間に形成される隙間に位置させる構造は、管路の内周面が既設管の内周面、斫によって削除された内表面、吹付層からなる内表面の何れであっても好ましく適用することが可能である。  As described above, the structure in which the compressed layer provided on the outer peripheral surface of the repair piece (the outer peripheral surface of the annular repair material) is positioned in the gap formed between the inner peripheral surface of the pipe line to be repaired and the repair material is The present invention can be preferably applied to any one of the inner peripheral surface of the existing pipe, the inner peripheral surface of the existing pipe, the inner surface removed by the scissors, and the inner surface made of the spray layer.

また、不織布からなる圧縮材に硬化剤を含浸させた圧縮材を用いる方法もある。この圧縮材が、全体にわたって硬化剤が含浸されている場合、経時的に圧縮材全体が硬化してしまう。このため、外周面に圧縮層を設けた補修片によって構成した補修材を用いることが好ましく、且つ圧縮層には硬化剤を含浸させることなく、復元性を保持させておくことが好ましい。  There is also a method of using a compression material obtained by impregnating a compression agent made of a nonwoven fabric with a curing agent. When this compression material is impregnated with the curing agent throughout, the entire compression material is cured over time. For this reason, it is preferable to use a repair material constituted by a repair piece provided with a compression layer on the outer peripheral surface, and it is preferable that the compression layer retains the restoring property without being impregnated with a curing agent.

更に、硬化剤を含浸した含浸層と、硬化剤を含浸することのない非含浸層とからなる圧縮材を用いる方法もある。この場合、圧縮材が単独で復元性を保持する非含浸層を有しているため、補修材が弾性を発揮する必要がなく、環状の補修材を構成する際に、外周面に圧縮層を設けることのない補修片を用いることが可能である。しかし、外周面に圧縮層を設けた所定数の補修片によって環状に構成した補修材を用いても良いことは当然である。  Further, there is a method using a compression material composed of an impregnated layer impregnated with a curing agent and a non-impregnated layer not impregnated with the curing agent. In this case, since the compression material has a non-impregnated layer that retains its resilience alone, it is not necessary for the repair material to exhibit elasticity, and when forming an annular repair material, a compression layer is formed on the outer peripheral surface. Repair pieces that are not provided can be used. However, it is a matter of course that a repair material configured in a ring shape by a predetermined number of repair pieces provided with a compression layer on the outer peripheral surface may be used.

次に、補修構造の実施例について図1〜図3を用いて説明する。図1に補修構造は、下水道用の管路であって、特に、作業員が内部に入って作業することが可能とされる口径800mm以上の管路を対象としている。  Next, an embodiment of the repair structure will be described with reference to FIGS. The repair structure in FIG. 1 is a pipeline for sewerage, and is particularly intended for pipelines having a diameter of 800 mm or more that allow workers to enter and work inside.

図1に於いて、地中に敷設された下水道用であって、劣化が進行した補修すべき管路1又は管路を構成する管1の内部に、所定数の補修片2を連続させて組み立てることで環状に構成された補修材Aが配置されている。また、管路1の内周面1aと補修材Aとの間に形成された隙間3には、自由状態に於ける厚さが隙間3の寸法よりも大きい圧縮材4が圧縮された状態で位置している。  In FIG. 1, a predetermined number ofrepair pieces 2 are connected to the inside of apipe 1 that is for sewerage laid underground and to be repaired or has been deteriorated. The repair material A configured in an annular shape by assembling is arranged. Further, in thegap 3 formed between the innerperipheral surface 1a of thepipe 1 and the repair material A, thecompressed material 4 having a thickness in a free state larger than the dimension of thegap 3 is compressed. positioned.

補修材Aは、管路1の内周面1aの径と隙間3の寸法とに応じて設定された円(環状に構成された補修材Aの外接円)を、周方向に所定数に分割して形成された補修片2を円周方向に連続させて組み立てることで環状に構成されている。この補修材Aは、個々の補修材2が剛性を有するため、管路1の内部で環状に構成されたとき、環状の状態を維持すると共に半径方向に作用する力に対し充分な強度を発揮している。  The repair material A divides a circle (a circumscribed circle of the repair material A configured in an annular shape) set according to the diameter of the innerperipheral surface 1a of thepipe line 1 and the size of thegap 3 into a predetermined number in the circumferential direction. Therepair piece 2 formed in this manner is formed in an annular shape by assembling it continuously in the circumferential direction. Since eachrepair material 2 has rigidity, this repair material A maintains an annular state and exhibits sufficient strength against the force acting in the radial direction when it is configured in an annular shape inside thepipe 1. doing.

本実施例に於いて、補修材Aは周が6等分されて、6個の補修片2を組み立てることで環状に構成されている。補修材Aの長手方向(管路1の敷設方向)の長さ(補修材A又は補修片2の幅寸法)は限定することなく、補修片2の重量や作業性を考慮して適宜設定されている。  In this embodiment, the repair material A is divided into six equal parts, and the repair material A is formed in an annular shape by assembling sixrepair pieces 2. The length (the width dimension of the repair material A or the repair piece 2) in the longitudinal direction of the repair material A (the laying direction of the pipe line 1) is not limited and is appropriately set in consideration of the weight and workability of therepair piece 2. ing.

即ち、所定数(6個)の補修片2を円周方向に接続して環状の補修材Aを構成する作業は管路1の内部で行われる。このため、管路1の内部での作業性の良好さを確保することが重要であり、1個の補修片2の重量も良好な作業性を確保することに基づいて設定されることが好ましい。また、補修片2の厚さは、該補修片2を形成する材質や発揮すべき剛性、強度に対応して設定される。このような観点から、個々の補修片2の円弧長や幅寸法及び厚さは限定するものではない。  That is, the operation of connecting the predetermined number (six) ofrepair pieces 2 in the circumferential direction to form the annular repair material A is performed inside thepipe 1. For this reason, it is important to ensure good workability inside thepipeline 1, and the weight of onerepair piece 2 is preferably set based on ensuring good workability. . Further, the thickness of therepair piece 2 is set according to the material forming therepair piece 2, the rigidity to be exhibited, and the strength. From such a viewpoint, the arc length, the width dimension, and the thickness of eachrepair piece 2 are not limited.

図2に示すように、補修片2は剛性を有する円弧状に形成されており、円周方向の両端部分には、連続する他の補修片2と係合するために係合部2cが形成されている。本実施例では、補修片2は硬化性樹脂を含浸させた繊維基材を円弧状に成形すると共に円周方向の両端部に夫々係合部2cを成形して硬化させることで構成されている。この補修片2では環状の補修材Aを構成するのに充分な剛性を有し、且つ管路1を補修するのに充分な強度を有する。  As shown in FIG. 2, therepair piece 2 is formed in a rigid arc shape, and engagingportions 2 c are formed at both ends in the circumferential direction to engage with othercontinuous repair pieces 2. Has been. In this embodiment, therepair piece 2 is formed by forming a fiber base impregnated with a curable resin into an arc shape, and forming and hardening the engagingportions 2c at both ends in the circumferential direction. . Therepair piece 2 has sufficient rigidity to form the annular repair material A and has sufficient strength to repair thepipe line 1.

補修片2の円周方向の両端部に形成された係合部2cは、外周面2a側又は内周面2b側に突出部を有する段部として形成されている。そして、環状の補修材Aを構成したとき、該補修材Aが経時的に変形することがないように、係合部2cを接着や溶着等の手段で強固な接合状態を保持し得るように構成している。しかし、係合部2cの形状は本実施例にのみ限定するものではなく、互いに嵌めあうほぞやありによって構成しても良く、一方の端面にスタッドボルトを設けると共に他方の端面に該スタッドボルトを嵌合する穴を形成して嵌めあうようにしても良い。  The engagingportions 2c formed at both ends in the circumferential direction of therepair piece 2 are formed as stepped portions having protrusions on the outerperipheral surface 2a side or the innerperipheral surface 2b side. And when the cyclic | annular repair material A is comprised, so that this repair material A may not deform | transform with time so that theengagement part 2c can be maintained in a strong joined state by means such as adhesion or welding. It is composed. However, the shape of the engagingportion 2c is not limited to this embodiment, and it may be constituted by a tenon or the like that fits each other. A stud bolt is provided on one end face and the stud bolt is provided on the other end face. You may make it fit and form the hole to fit.

また、本実施例の補修片2の外周面2aは圧縮層を有していないが、前述したように、圧縮層を有することも可能である。圧縮層を有する外周面2aは、前記したように圧縮層を有することなく形成された補修片2の外周面2aに、不織布や発泡樹脂或いはゴム等の弾性体を接着又は溶着等の手段で一体化させることで形成することが可能である。また、補修片2を形成する際に、剛性を発揮すべき部位を構成する材料と弾性を発揮すべき部位を構成する材料を重ね合わせた状態で成形することでも良い。  Moreover, although the outerperipheral surface 2a of therepair piece 2 of a present Example does not have a compression layer, as above-mentioned, it is also possible to have a compression layer. The outerperipheral surface 2a having the compression layer is integrated with the outerperipheral surface 2a of therepair piece 2 formed without having the compression layer as described above by bonding or welding an elastic body such as a nonwoven fabric, foamed resin or rubber. It is possible to form by forming. Moreover, when forming therepair piece 2, you may shape | mold in the state which accumulated the material which comprises the site | part which should exhibit rigidity, and the material which comprises the site | part which should exhibit elasticity.

前述したように、補修片の外周面の半径は環状に構成された補修材の半径とは異なる値を有している。本実施例では、補修片2は、外周面2aの半径が補修材Aの半径よりも小さくなるように形成されている。このため、所定数の補修片2を円周方向に連続させたとき、図3(a)に示すように、円周方向の両端部分に配置された補修片2が互いに重なり合うことになる。  As described above, the radius of the outer peripheral surface of the repair piece has a value different from the radius of the repair material configured in an annular shape. In the present embodiment, therepair piece 2 is formed so that the radius of the outerperipheral surface 2 a is smaller than the radius of the repair material A. For this reason, when the predetermined number ofrepair pieces 2 are continued in the circumferential direction, therepair pieces 2 arranged at both ends in the circumferential direction overlap each other as shown in FIG.

従って、連続した補修片2の円周方向の両端部分に位置する二つの係合部2cに同図に示す矢印方向への力を作用させることで、拡径した後、対向する二つの係合部2cを互いに突き合せることで、一点鎖線で示す環状の補修材Aを構成することが可能となる。  Therefore, two opposing engagements after expanding the diameter by applying a force in the direction of the arrow shown in the figure to the twoengagement portions 2c located at both ends of the circumferential direction of thecontinuous repair piece 2. By matching theportions 2c with each other, it is possible to configure an annular repair material A indicated by a one-dot chain line.

また、補修片2の外周面2aの半径が補修材Aの半径よりも大きい場合、所定数の補修片2を円周方向に連続させたとき、図3(b)に示すように、円周方向の両端部分に配置された補修片2は互いに離隔してしまうことになる。このため、連続した補修片2の円周方向の両端部分に位置する二つの係合部2cに同図に示す矢印方向への力を作用させることで、縮径して対向する二つの係合部2cを互いに突き合せることで、一点鎖線で示す環状の補修材Aを構成することが可能となる。  Further, when the radius of the outerperipheral surface 2a of therepair piece 2 is larger than the radius of the repair material A, when a predetermined number ofrepair pieces 2 are made continuous in the circumferential direction, as shown in FIG. Therepair pieces 2 arranged at both end portions in the direction are separated from each other. For this reason, two engagingportions 2c positioned at both ends in the circumferential direction of thecontinuous repair piece 2 are subjected to a force in the direction of the arrow shown in FIG. By matching theportions 2c with each other, it is possible to configure an annular repair material A indicated by a one-dot chain line.

隙間3の寸法は一義的に設定されるものではなく、管路1の内周面1aの径、圧縮材4の材質、圧縮材4に設定された圧縮比、或いは圧縮材4に硬化剤を含浸させるか否か、等の条件に対応させて適宜設定される。  The size of thegap 3 is not uniquely set. The diameter of the innerperipheral surface 1 a of thepipe line 1, the material of thecompression material 4, the compression ratio set for thecompression material 4, or thecompression material 4 with a curing agent. It is set as appropriate in accordance with conditions such as whether or not to impregnate.

圧縮材4はフェルトを用いている。このフェルトでは、繊維の間に空隙が形成され、充分な圧縮性と復元性を有している。このため、管路1の内周面1aと補強材Aを構成する補修片2の外周面2aとの間に形成された隙間3に対し、予め設定された圧縮比で圧縮された状態で位置することが可能である。  Thecompression material 4 uses felt. In this felt, voids are formed between the fibers, and it has sufficient compressibility and restoration. For this reason, thegap 3 formed between the innerperipheral surface 1a of thepipe line 1 and the outerperipheral surface 2a of therepair piece 2 constituting the reinforcing material A is positioned in a state compressed at a preset compression ratio. Is possible.

圧縮材4を構成するフェルトに形成された空隙には硬化剤を含浸させておくことが可能であり、予め硬化剤を含浸させた圧縮材を用いることで、該硬化剤が硬化したとき、管路1と補修材Aとを強固に一体化させることが可能である。圧縮材4に含浸させる硬化剤としては特に限定するものではなく、常温硬化型の硬化剤を用いることが可能である。この硬化剤は硬化が完了するまでに多少の時間が掛かるため、補修作業を進行させるのに支障を来すことがなく有利である。  The void formed in the felt constituting thecompression material 4 can be impregnated with a curing agent. When the compression agent is impregnated with the curing agent in advance, Theroad 1 and the repair material A can be firmly integrated. The curing agent impregnated into thecompression material 4 is not particularly limited, and a room temperature curing type curing agent can be used. Since this curing agent takes some time to complete the curing, it is advantageous without causing any trouble in proceeding with the repair work.

次に、管路の補修工法の実施例について図4、図5により説明する。先ず、図4(a)に示すように、補修すべき管路1の内周面1aに圧縮材4を巻き付ける。本実施例では、硬化剤が含浸されていない圧縮材4を用いている。  Next, an embodiment of the pipe repair method will be described with reference to FIGS. First, as shown to Fig.4 (a), thecompression material 4 is wound around the internalperipheral surface 1a of thepipe line 1 which should be repaired. In this embodiment, acompression material 4 that is not impregnated with a curing agent is used.

補修すべき管路1の内周面1aに対し、圧縮材4を如何なる形態で巻き付けるかを限定するものではなく、長尺状の圧縮材4を管路1の内周面1aに螺旋状に巻き付けたり、内周面1aの長さ方向に輪切り状に巻き付けたり、或いは内周面1aの円周の長さと等しい幅を持った長尺状の圧縮材4をロール状に巻き付けることが可能である。何れにしても、補修すべき管路1の内周面1aの径や、補修すべき管路1の長さ等の条件に対応させて最適な方法を採用することが好ましい。  It does not limit what form thecompression material 4 is wound around the innerperipheral surface 1a of thepipe line 1 to be repaired, and thelong compression material 4 is spirally formed on the innerperipheral surface 1a of thepipe line 1 It is possible to wind it, wind it in a ring shape in the length direction of the innerperipheral surface 1a, or wind along compression material 4 having a width equal to the circumferential length of the innerperipheral surface 1a in a roll shape. is there. In any case, it is preferable to adopt an optimum method in accordance with conditions such as the diameter of the innerperipheral surface 1a of thepipeline 1 to be repaired and the length of thepipeline 1 to be repaired.

管路1の内周面1aに巻き付けた圧縮材4を内周面1aに仮固定する。圧縮材4を内周面1aに仮固定する方法は限定するものではなく、取外し可能なリング状のバンドを利用して内周面1a側に押圧する方法や、圧縮材4の外面4aに接着剤を塗布して内周面1aに接着する方法、或いはコンクリート釘を圧縮材4の内面4b側から管路1に打ち込む方法、等の方法を選択的に採用することが可能である。  Thecompressed material 4 wound around the innerperipheral surface 1a of thepipe line 1 is temporarily fixed to the innerperipheral surface 1a. The method of temporarily fixing thecompressed material 4 to the innerperipheral surface 1a is not limited, and a method of pressing thecompressed material 4 toward the innerperipheral surface 1a using a removable ring-shaped band, or bonding to theouter surface 4a of thecompressed material 4 It is possible to selectively adopt a method such as a method of applying an agent and adhering to the innerperipheral surface 1a, or a method of driving a concrete nail into theconduit 1 from theinner surface 4b side of thecompression material 4.

上記の如くして管路1の内周面1aに仮固定されている圧縮材4は何ら外力の作用しない自由な状態にあり、厚さは初期の寸法を有している。  As described above, thecompression material 4 temporarily fixed to the innerperipheral surface 1a of thepipe line 1 is in a free state in which no external force acts, and the thickness has an initial dimension.

次に、管路1の内周面1aに仮固定されている圧縮材4の内面4b側に所定数の補修片2を搬入する。その後、同図(b)に示すように、これらの補修片2を円周方向に連続させて端部の係合部2cが重なった形状とする。その後、互いに重なった両端の係合部2cに矢印方向の力を作用させて拡径すると、この過程で、補修片2の外周面2aが圧縮材4の内面4bと押圧し、更なる拡径に伴って圧縮材4が圧縮する。  Next, a predetermined number ofrepair pieces 2 are carried into theinner surface 4 b side of thecompression material 4 temporarily fixed to the innerperipheral surface 1 a of thepipe line 1. Thereafter, as shown in FIG. 5B, therepair pieces 2 are made continuous in the circumferential direction so that theengagement portions 2c at the end portions overlap each other. Thereafter, when the diameter in the direction of the arrow is applied to the engagingportions 2c at both ends that overlap each other, the outerperipheral surface 2a of therepair piece 2 is pressed against theinner surface 4b of thecompression material 4 in this process, and further diameter expansion is performed. Accordingly, thecompressed material 4 is compressed.

そして、対向する二つの係合部2cに矢印方向の力を作用させて互いに突き合せることで、図5に示すように、環状の補修材Aを構成する。このとき、補修片2の外周面2aが平滑な面として形成されるため、圧縮材4はムラなく圧縮し、管路1と補修材Aを一体化することが可能である。このようにして管路1と補修材Aを一体化することで、強度のムラのない補修を実現することが可能である。  And the cyclic | annular repair material A is comprised as shown in FIG. 5 by making the force of an arrow direction act on the two engagingparts 2c which oppose, and mutually abutting. At this time, since the outerperipheral surface 2a of therepair piece 2 is formed as a smooth surface, thecompressed material 4 can be compressed without unevenness, and theconduit 1 and the repair material A can be integrated. By integrating thepipe line 1 and the repair material A in this way, it is possible to realize repair without unevenness in strength.

所定数の補修片2を連続させた後、対向する係合部2cに矢印方向の力を作用させる方法としては、対向する二つの係合部2cの近傍に夫々突起を設けておき、この突起にジャッキを介在させて力を作用させることが可能である。この場合、環状の補修材Aを構成した後、前記突起を削除することが好ましい。この方法は、二つの係合部2cが互いに重なっている場合、又は互いに離隔している場合に夫々採用することが可能である。しかし、この方法に限定するものではないことは当然である。  As a method of applying a force in the direction of the arrow to the opposing engagingportions 2c after a predetermined number ofrepair pieces 2 are made continuous, protrusions are provided in the vicinity of the two opposing engagingportions 2c. It is possible to apply a force through a jack. In this case, it is preferable to delete the protrusion after the annular repair material A is formed. This method can be employed when the twoengaging portions 2c overlap each other or are separated from each other. However, it is natural that the method is not limited to this method.

上記実施例では、圧縮材4を予め管路1の内周面1aに巻き付けておいたが、この手順に限定するものではなく、先ず管路1の内部で環状の補修材Aを組み立てておき、管路1の内周面1aと補修材Aの外周面2aとの間に形成された隙間3に圧縮材4を押しこむようにして位置させても良い。  In the above embodiment, thecompression material 4 is wound around the innerperipheral surface 1a of thepipe line 1 in advance. However, the procedure is not limited to this. Thecompression material 4 may be positioned so as to be pushed into thegap 3 formed between the innerperipheral surface 1a of thepipe line 1 and the outerperipheral surface 2a of the repair material A.

また、補修すべき管路1に対する補修を実行するに際し、補修すべき区間に対する下水の流れを如何にするかについては限定するものではなく、補修すべき区間の上下に遮蔽板やパッカーを配置して下水の流れを遮断し、下水をホースによって地上を経由させて、或いは補修すべき区間の内部を通して下流側に流通させることが好ましい。  In addition, when performing repair on thepipeline 1 to be repaired, there is no limitation on the flow of sewage to the section to be repaired, and shielding plates and packers are arranged above and below the section to be repaired. It is preferable to block the flow of sewage and to distribute the sewage downstream through the ground or through the inside of the section to be repaired by a hose.

次に、管路の補修構造の他の例について図6により説明する。尚、図に於いて、前述した実施例と同一の部分及び同一の機能を有する部分には同一の符号を付して説明を省略する。  Next, another example of the pipe repair structure will be described with reference to FIG. In the figure, the same parts and parts having the same functions as those of the above-described embodiment are designated by the same reference numerals and the description thereof is omitted.

図6(a)は、補修すべき管路1の内周面1aに圧縮材4を巻き付けた状態を示している。圧縮材4は、硬化剤を含浸させた含浸層4cと、硬化剤を含浸させることのない非含浸層4dと、を有しており、含浸層4cを管路1の内周面1a側に配置して巻き付けられている。  FIG. 6A shows a state in which thecompression material 4 is wound around the innerperipheral surface 1a of thepipeline 1 to be repaired. Thecompression material 4 has animpregnation layer 4c impregnated with a curing agent and anon-impregnation layer 4d not impregnated with the curing agent, and theimpregnation layer 4c is disposed on the innerperipheral surface 1a side of theconduit 1. Arranged and wound.

尚、含浸層4cは不織布を基材として常温硬化剤を含浸させて構成されており、非含浸層4dは硬質ウレタンによって構成され、これらの含浸層4cと非含浸層4dを積層することで、圧縮材4が構成されている。また、含浸層4cを管路1の内周面1a側に配置するか、補修材A側に配置するかは限定するものではなく、管路1の内周面1aの表面状態や口径等を含む条件に応じて適宜設定することが好ましい。  The impregnatedlayer 4c is constituted by impregnating a non-woven fabric as a base material with a room temperature curing agent, thenon-impregnated layer 4d is constituted by hard urethane, and the impregnatedlayer 4c and thenon-impregnated layer 4d are laminated, Acompressed material 4 is formed. Moreover, it does not limit whether theimpregnation layer 4c is arrange | positioned at the innerperipheral surface 1a side of thepipe line 1, or it arrange | positions at the repair material A side, The surface state of an innerperipheral surface 1a of thepipe line 1, a caliber, etc. It is preferable to set appropriately according to the conditions to be included.

同図(b)は、圧縮材4が、補修すべき管路1の内周面1aと、環状の補修材Aとの間に形成された隙間3に位置した状態を示している。圧縮材4を構成する含浸層4c、非含浸層4dは夫々充分に圧縮されており、含浸層4cは含浸した硬化剤が未硬化状態に於いて生じる復元性で復元し、非含浸層4dは初期の復元性を発揮して復元している。  FIG. 2B shows a state in which thecompressed material 4 is located in thegap 3 formed between the innerperipheral surface 1a of thepipe line 1 to be repaired and the annular repair material A. The impregnatedlayer 4c and thenon-impregnated layer 4d constituting thecompression material 4 are sufficiently compressed, respectively, and the impregnatedlayer 4c is restored by the restoring property generated in the uncured state of the impregnated curing agent, and thenon-impregnated layer 4d is Restoring with the initial resilience.

そして、含浸層4cに含浸された硬化剤が経時的に硬化したとき、非含浸層4dは初期の状態よりも劣化したとしても復元性を保持している。このため、補修すべき管路1と環状の補修材Aとは、両者の間に位置する被含浸層4dの復元性によって互いの移動の自由度を保持し、地震時や地盤沈下等に於いて管路1に作用する外力をそのまま補修材Aに伝えることがない。  When the curing agent impregnated in the impregnatedlayer 4c is cured with time, thenon-impregnated layer 4d retains its resilience even if it is deteriorated from the initial state. For this reason, thepipeline 1 to be repaired and the annular repair material A maintain the degree of freedom of movement with respect to each other by the resilience of the impregnatedlayer 4d located between them, and in the event of an earthquake or land subsidence The external force acting on thepipe line 1 is not transmitted to the repair material A as it is.

本発明の管路の補修構造は、口径の大きい既設管路の補修に利用して有利である。また、本発明の補修工法は、前記補修構造を実施する際に利用して有利である。  The pipe repair structure of the present invention is advantageous for use in repairing an existing pipe having a large diameter. Further, the repair method of the present invention is advantageous when used in carrying out the repair structure.

A 補修材
1 管路、管
1a 内周面
2 補修片
2a 外周面
2b 内周面
2c 係合部
3 隙間
4 圧縮材
4a 外面
4b 内面
4c 含浸層
4d 非含浸層
ARepair material 1 Pipe line,pipe 1a Innerperipheral surface 2Repair piece 2a Outerperipheral surface 2b Innerperipheral surface2c Engagement portion 3Clearance 4Compressed material4a Outer surface4b Inner surface4c Impregnated layer 4d Non-impregnated layer

Claims (8)

Translated fromJapanese
複数の剛性を持った補修片を組み立てて環状に構成され、補修すべき管路の内部に全長にわたって配置されて該管路の内周面との間に隙間を形成する補修材と、
内部に空隙を有し且つ圧縮性と復元性を有する自由状態に於ける厚さが補修すべき管路の内周面と前記補修材との間に形成された隙間の寸法よりも大きい圧縮材と、を有し、
前記圧縮材は、一様に圧縮された状態で前記補修すべき管路の全長にわたって該補修すべき管路の内周面と前記補修材との間に形成された隙間に位置していることを特徴とする管路の補修構造。
Configured annularly assembled repair piece having a plurality of rigid, and repairmaterial is disposedover the entire length in the interior of the to be repaired pipeto form a gap between the inner peripheral surface ofthe pipe,
Inside it has voids and compressibility and compression greater than the dimension of the gap formed between the inner peripheral surface of the resilient conduit in thickness to the free stateof chromatic should repair and the repair material And having
The compressed material is located in a gap formed between the inner peripheral surface of the pipeline to be repaired and the repair materialover the entire length of the pipeline to be repaired in auniformly compressed state. The repair structure of the pipe line characterized by
前記圧縮材空隙に硬化剤が含浸されていることを特徴とする請求項1に記載した管路の補修構造。The pipe repair structure according to claim 1, whereina void in the compression material is impregnated with a curing agent. 前記圧縮材は、硬化剤が含浸されている含浸層と、硬化剤が含浸されることのない非含浸層と、を有することを特徴とする請求項1に記載した管路の補修構造。  The pipe repair structure according to claim 1, wherein the compression material has an impregnation layer impregnated with a curing agent and a non-impregnation layer not impregnated with the curing agent. 前記補修材を構成する補修片は、環状に構成した補修材に外接する円を所定数に分割したときの円弧長と等しい円弧長を有し、且つ前記円の半径とは異なる半径を有することを特徴とする請求項1に記載した管路の補修構造。  The repair piece constituting the repair material has an arc length equal to the arc length when a circle circumscribing the annular repair material is divided into a predetermined number, and has a radius different from the radius of the circle. The pipe repair structure according to claim 1. 前記補修材を構成する補修片の外周側の面に内部に空隙を有し且つ圧縮性と復元性を有する圧縮層が形成されていることを特徴とする請求項1乃至4の何れかに記載した管路の補修構造。The compressed layerwhich has a space | gap inside and has a compressibilityand a decompression| restorationinside is formed in the surface of the outer peripheral side of the repair piece which comprises the said repair material. The repair structure of the pipeline. 前記圧縮層空隙に硬化剤が含浸されていることを特徴とする請求項5に記載した管路の補修構造。6. The pipe repair structure according to claim 5, whereina void in the compressed layer is impregnated with a curing agent. 補修すべき管路の全長にわたって該管路の内周面に内部に空隙を有し且つ圧縮性と復元性を有する圧縮材を配置して仮固定する工程と、
前記補修すべき管路の内周面に配置された圧縮材の内部に於いて、複数の剛性を持った補修片を組み合わせて拡径することで環状の補修材を組み立てると共に、該環状の補修材によって前記圧縮材を補修すべき管路の内周面に一様に押圧させる工程と、
前記環状の補修材を補修すべき管路の全長にわたって構成する工程と、
を含むことを特徴とする管路の補修工法。
A step of placing and temporarily fixing a compression material having avoid inthe inner peripheral surface of thepipeline over theentire length of the pipeline to be repaired and having compressibility and restoration; and
In the inside of the compression material arranged on the inner peripheral surface of the pipe line to be repaired, an annular repair material is assembled by expanding the diameter by combining repair pieces having a plurality of rigidity, and the annular repair is performed. A step ofuniformly pressing the compressed material against the inner peripheral surface of the pipeline to be repaired by a material;
Configuring the annular repair material over the entire length of the pipeline to be repaired;
A repair method for a pipeline characterized by including
補修すべき管路の内周面が劣化部分を削除した面又は劣化部分を削除した面に吹付材を吹き付けた吹付層を形成した面からなり、該補修すべき管路の内部に於いて、剛性を有し且つ外周側の面に内部に空隙を有し且つ圧縮性と復元性を有する圧縮層が形成された所定数の補修片を組み合わせて拡径することで環状の補修材を組み立てると共に、該環状の補修材の外周側の面に形成された圧縮層を補修すべき管路の内周面に一様に押圧させ、且つ前記補修材を補修すべき管路の全長にわたって配置することを特徴とする管路の補修工法。The inner peripheral surface of the pipeline to be repaired consists of a surface from which the deteriorated portion has been deleted or a surface in which a spray layer is sprayed on the surface from which the deteriorated portion has been deleted, and inside the conduit to be repaired, While assembling an annular repair material by expanding the diameter by combining a predetermined number of repair pieces having rigidity and having avoid in the outer peripheral surface and having a compression layer having compressibility and restoration property, , in whichto place over the entire length of the annular isuniformly pressed against the inner peripheral surface of the outer peripheral side pipe to be repaired compressed layer formed on the surface of the repairmaterial, and the conduit to be repaired to the repair material This is a repair method for pipelines.
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