技术领域technical field
本实用新型属于土工试验技术领域，涉及一种应力式抗拉强度测试装置，尤其涉及一种针对三轴土样的应力式抗拉强度测试装置。The utility model belongs to the technical field of geotechnical tests, and relates to a stress-type tensile strength testing device, in particular to a stress-type tensile strength testing device for triaxial soil samples.
背景技术Background technique
土体拉伸破坏是岩土工程中不可忽视的一个问题，但由于土体抗拉强度较小，试验量测困难，国内外对其研究都较少，在实际工程中土体基本不作为抗拉材料使用。随着国家基础设施建设逐步开展，对建筑物或构筑物的抗拉和抗裂能力有了更高的要求，越来越多的工程问题牵涉到土体的抗拉强度，如地面开裂、土石坝心墙裂缝等都是土体拉伸破坏的表现形式。因此，对于土体拉伸特性的深入研究具有重要的理论意义和工程意义。Tensile failure of soil is a problem that cannot be ignored in geotechnical engineering. However, due to the small tensile strength of soil and the difficulty of test measurement, there are few researches on it at home and abroad. Pull material used. With the gradual development of national infrastructure construction, there are higher requirements for the tensile and crack resistance of buildings or structures. More and more engineering problems involve the tensile strength of soil, such as ground cracks, earth-rock dams Cracks in the core wall are manifestations of soil tensile failure. Therefore, the in-depth study of the tensile properties of soil has important theoretical and engineering significance.
应力式三轴土样抗拉强度测试装置是一种用于三轴土样抗拉强度测试的仪器，抗拉强度是实体工程抗拉稳定性分析的基本参数。但是，目前的拉伸仪还不能进行一定应力条件下三轴土样的抗拉强度测试，影响了土体抗拉强度的测试及研究。因此，为了解决抗拉强度测定面临的问题，本实用新型给出了应力式三轴土样抗拉强度测试装置。The stress-type triaxial soil sample tensile strength testing device is an instrument used for triaxial soil sample tensile strength testing, and the tensile strength is a basic parameter for the analysis of tensile stability of solid engineering. However, the current extensometer cannot perform the tensile strength test of the triaxial soil sample under a certain stress condition, which affects the test and research of the tensile strength of the soil. Therefore, in order to solve the problems faced by the tensile strength measurement, the utility model provides a stress-type triaxial soil sample tensile strength testing device.
鉴于此，本实用新型公开了一种应力式三轴土样抗拉强度测试装置，用来测试三轴土样的抗拉强度，从而提高科研水平。In view of this, the utility model discloses a stress-type triaxial soil sample tensile strength testing device, which is used for testing the tensile strength of triaxial soil samples, thereby improving the level of scientific research.
发明内容Contents of the invention
本实用新型针对目前拉伸仪出现的缺陷问题，给出了一种应力式三轴土样抗拉强度测试装置，可实现三轴土样在一定应力下的抗拉强度测试的目的，满足试验的多样化要求。The utility model provides a stress-type triaxial soil sample tensile strength testing device aiming at the defects of the current extensometer, which can realize the purpose of testing the tensile strength of the triaxial soil sample under a certain stress and meet the test requirements. diverse requirements.
本实用新型给出的应力式三轴土样抗拉强度测试装置技术方案如下：The technical scheme of the stress type triaxial soil sample tensile strength testing device provided by the utility model is as follows:
一种应力式三轴土样抗拉强度测试装置，包括底座、左支架、右支架、左土样帽、右土样帽及滑轮，所述的左支架和右支架分别固定在底座上，左土样帽与左支架固定连接，右支架的顶面为契合右土样帽外轮廓的弧形凹面滑槽，右土样帽放置在右支架的滑槽内，左土样帽与右土样帽相互平行且在同一水平高度，右土样帽的外侧中心固定连接铁丝的一端，铁丝绕过滑轮，铁丝的另一端为挂钩，挂钩上悬挂砝码，滑轮直径与左、右土样帽内侧圆半径相同，右土样帽的外壁设置位移传感器。A stress-type triaxial soil sample tensile strength testing device, comprising a base, a left bracket, a right bracket, a left soil sample cap, a right soil sample cap and a pulley, the left bracket and the right bracket are respectively fixed on the base, the left The soil sample cap is fixedly connected with the left bracket, and the top surface of the right bracket is an arc-shaped concave chute that fits the outer contour of the right soil sample cap. The right soil sample cap is placed in the chute of the right bracket, and the left soil sample cap and the right soil sample The caps are parallel to each other and at the same level. The outer center of the right soil sample cap is fixedly connected to one end of the iron wire. The iron wire goes around the pulley. The other end of the iron wire is a hook on which weights are hung. The radius of the circle is the same, and the outer wall of the right soil sample cap is provided with a displacement sensor.
所述的左土样帽和右土样帽为圆筒状，左支架和右支架的顶面为契合左土样帽和右土样帽的弧形凹面，左土样帽与左支架通过螺钉固定连接。The left soil sample cap and the right soil sample cap are cylindrical, and the top surfaces of the left bracket and the right bracket are curved concave surfaces that fit the left soil sample cap and the right soil sample cap, and the left soil sample cap and the left bracket are screwed together. Fixed connection.
所述的右土样帽外侧及右支架上部涂抹大量的凡士林，在抗拉强度测试时，减小摩擦系数，保证试验精度。A large amount of vaseline is applied on the outside of the right soil sample cap and the upper part of the right bracket, so as to reduce the coefficient of friction during the tensile strength test and ensure the accuracy of the test.
所述的铁丝及滑轮表面均光滑，从而减小摩擦，保证试验的精度，试验时铁丝一端通过挂钩悬挂相应重量的砝码，另一端绕过滑轮与右土样帽外侧正中相接。The surfaces of the iron wire and the pulley are smooth, thereby reducing friction and ensuring the accuracy of the test. During the test, one end of the iron wire hangs a weight of corresponding weight through a hook, and the other end bypasses the pulley and connects to the center of the outer side of the right soil sample cap.
位移传感器用来测量拉伸过程中土样的变形，左右土样帽内侧保持干净，方便粘住土样。The displacement sensor is used to measure the deformation of the soil sample during the stretching process, and the inner sides of the left and right soil sample caps are kept clean to facilitate sticking to the soil sample.
与现有技术相比，本实用新型的优点如下：Compared with prior art, the utility model has the following advantages:
针对目前的拉伸仪还不能进行一定应力条件下三轴土样的抗拉强度测试的问题，发明本装置填补该领域测试仪器的空白，可实现三轴土样在一定应力下的抗拉强度测试的目的，满足试验的多样化要求，从而提高科研水平，结构简单，取材方便。Aiming at the problem that current extensometers cannot test the tensile strength of triaxial soil samples under certain stress conditions, this device is invented to fill the gap of testing instruments in this field, and can realize the tensile strength of triaxial soil samples under certain stress The purpose of the test is to meet the diverse requirements of the test, thereby improving the level of scientific research, with a simple structure and convenient material collection.
附图说明Description of drawings
图1是一种应力式三轴土样抗拉强度测试装置的正视图。Fig. 1 is a front view of a stress-type triaxial soil sample tensile strength testing device.
图2是图1的侧视图。FIG. 2 is a side view of FIG. 1 .
图中：1—底座，2—左支架，3—右支架，4—左土样帽，5—右土样帽，6—圆柱形三轴土样，7—螺钉，8—位移传感器，9—铁丝，10—滑轮，11—挂钩。In the figure: 1—base, 2—left bracket, 3—right bracket, 4—left soil sample cap, 5—right soil sample cap, 6—cylindrical triaxial soil sample, 7—screw, 8—displacement sensor, 9 —iron wire, 10—pulley, 11—hook.
具体实施方式Detailed ways
结合图1，图2和具体实施方式进一步阐述本实用新型。In conjunction with Fig. 1, Fig. 2 and the specific embodiment, the utility model is further described.
一种应力式三轴土样抗拉强度测试装置，包括底座1、左支架2、右支架3、左土样帽4、右土样帽5及滑轮10，所述的左支架2和右支架3分别固定在底座1上，左土样帽4与左支架2固定连接，左土样帽4和右土样帽5为圆筒状，左支架2和右支架3的顶面为契合左土样帽4和右土样帽5的弧形凹面，左土样帽4与左支架2通过螺钉7固定连接，右支架3设置顶面契合右土样帽5外轮廓的弧形凹面滑槽，右土样帽5放置在右支架3的滑槽内，左土样帽4与右土样帽5相互平行且在同一水平高度，右土样帽5的外侧中心固定连接铁丝9的一端，铁丝9绕过滑轮10，铁丝9的另一端为挂钩11，挂钩11上悬挂砝码，滑轮10直径与左、右土样帽4、5内侧圆半径相同，右土样帽5的外壁设置位移传感器8。A stress-type triaxial soil sample tensile strength testing device, comprising a base 1, a left support 2, a right support 3, a left soil sample cap 4, a right soil sample cap 5 and a pulley 10, the left support 2 and the right support 3 are respectively fixed on the base 1, the left soil sample cap 4 is fixedly connected with the left bracket 2, the left soil sample cap 4 and the right soil sample cap 5 are cylindrical, and the top surfaces of the left bracket 2 and the right bracket 3 fit the left soil The arc-shaped concave surface of the sample cap 4 and the right soil sample cap 5, the left soil sample cap 4 and the left support 2 are fixedly connected by screws 7, and the right support 3 is provided with an arc-shaped concave chute whose top surface fits the outer contour of the right soil sample cap 5, The right soil sample cap 5 is placed in the chute of the right support 3, the left soil sample cap 4 and the right soil sample cap 5 are parallel to each other and at the same level, the outer center of the right soil sample cap 5 is fixedly connected to one end of the iron wire 9, and the iron wire 9 bypass the pulley 10, the other end of the iron wire 9 is a hook 11, hang weights on the hook 11, the diameter of the pulley 10 is the same as the inner circle radius of the left and right soil sample caps 4 and 5, and the outer wall of the right soil sample cap 5 is provided with a displacement sensor 8.
所述的底座1长、宽、厚分别为14cm、8cm、1cm，左、右支架底边长4.5cm，宽0.6cm，高4.5cm，半圆直径4.3cm，左、右土样帽内径均为3.93cm，长均为1.7cm，左、右土样帽内侧圆心在底座上的投影点距底座1宽边均为1.75cm，距底座1对应的长边均为3cm，两投影点相距8cm，与圆柱形三轴土样6长度相同；左、右土样帽外侧圆心在底座上的投影点距底座1宽边均为1.55cm，距底座1对应的长边均为3cm，右土样帽5外侧布设的高精度位移传感器8，用来测量拉伸过程中土样的变形，左、右土样帽内侧保持干净，方便粘住土样；底座1保持水平，避免试样自重对抗拉强度测试的影响。The length, width and thickness of the base 1 are 14cm, 8cm and 1cm respectively, the length of the bottom of the left and right supports is 4.5cm, the width is 0.6cm, the height is 4.5cm, the diameter of the semicircle is 4.3cm, and the inner diameter of the left and right soil sample caps is 3.93cm and 1.7cm in length, the projection points of the inner circle centers of the left and right soil sample caps on the base are 1.75cm from the wide side of base 1, and 3cm from the corresponding long side of base 1, and the distance between the two projection points is 8cm. The length is the same as that of the cylindrical triaxial soil sample 6; the projection point of the center of the outer circle of the left and right soil sample caps on the base is 1.55 cm from the wide side of the base 1, and 3 cm from the corresponding long side of the base 1, and the right soil sample cap 5. The high-precision displacement sensor 8 arranged on the outside is used to measure the deformation of the soil sample during the stretching process. The inner sides of the left and right soil sample caps are kept clean to facilitate sticking to the soil sample; the base 1 is kept horizontal to prevent the self-weight of the sample from resisting the tensile strength Impact of testing.
加荷的铁丝9长16cm，直径0.1cm，试验时铁丝9一端通过挂钩11悬挂相应重量的砝码，另一端绕过滑轮10与右土样帽5外侧正中相连，滑轮10直径为1.965cm，与左、右土样帽内侧圆半径相同，保证施加水平的拉力，铁丝9及滑轮10表面均光滑，从而减小摩擦，保证试验的精度，砝码共有15块，质量均不同，范围为0.01 kg ~1kg。The loaded iron wire 9 is 16cm long and 0.1cm in diameter. During the test, one end of the iron wire 9 hangs the weight of the corresponding weight through the hook 11, and the other end goes around the pulley 10 and connects to the center of the right soil sample cap 5 outside. The diameter of the pulley 10 is 1.965cm. The radius of the inner circle of the left and right soil sample caps is the same to ensure that a horizontal tension is applied. The surfaces of the iron wire 9 and the pulley 10 are smooth, thereby reducing friction and ensuring the accuracy of the test. There are 15 weights with different masses, ranging from 0.01 kg ~1kg.
使用时，先用螺钉7将左土样帽4固定于左支架2上，在左、右土样帽内壁涂抹胶水，使得圆柱形三轴土样6两端分别固定于左、右土样帽内，在右土样帽5外侧及右支架2上部涂抹凡士林，减小摩擦系数，保证右土样帽5能自由移动，同时在右土样帽5外侧安装高精度位移传感器8，并将铁丝9一端与右土样帽5外侧正中相连，另一端绕过滑轮10与挂钩11相连，根据试验方案计算应悬挂的砝码再加载，从而实现一定拉应力作用下三轴土样的拉伸变形测试试验，进而换算为抗拉强度。When in use, first fix the left soil sample cap 4 on the left bracket 2 with the screw 7, apply glue on the inner walls of the left and right soil sample caps, so that the two ends of the cylindrical triaxial soil sample 6 are respectively fixed on the left and right soil sample caps Inside, smear vaseline on the outside of the right soil sample cap 5 and the top of the right bracket 2 to reduce the coefficient of friction and ensure that the right soil sample cap 5 can move freely. 9. One end is connected to the center of the outer side of the right soil sample cap 5, and the other end is connected to the hook 11 by bypassing the pulley 10. According to the test plan, the weight that should be suspended is reloaded, so as to realize the tensile deformation of the triaxial soil sample under a certain tensile stress Test test, and then converted to tensile strength.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220248.9UCN204575457U (en) | 2015-04-14 | 2015-04-14 | A kind of stress-type three axle soil sample tensile strength proving installation |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220248.9UCN204575457U (en) | 2015-04-14 | 2015-04-14 | A kind of stress-type three axle soil sample tensile strength proving installation |
| Publication Number | Publication Date |
|---|---|
| CN204575457Utrue CN204575457U (en) | 2015-08-19 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520220248.9UExpired - Fee RelatedCN204575457U (en) | 2015-04-14 | 2015-04-14 | A kind of stress-type three axle soil sample tensile strength proving installation |
| Country | Link |
|---|---|
| CN (1) | CN204575457U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675843A (en)* | 2016-02-24 | 2016-06-15 | 武汉大学 | Indirect measurement method for tensile strength of cohesive riverbank soil body |
| CN107462469A (en)* | 2017-09-08 | 2017-12-12 | 山西省交通科学研究院 | A kind of slope soil tensile strength on-site testing device and method of testing |
| CN108593151A (en)* | 2018-07-10 | 2018-09-28 | 浙江永阳节能技术有限公司 | A kind of calorimeter crushing tester |
| CN109406268A (en)* | 2018-09-07 | 2019-03-01 | 昆明理工大学 | A kind of ess-strain control formula soil body test for tensile strength device and method |
| CN110261086A (en)* | 2019-06-27 | 2019-09-20 | 广州黄船海洋工程有限公司 | A kind of strength test method of windlass pedestal |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675843A (en)* | 2016-02-24 | 2016-06-15 | 武汉大学 | Indirect measurement method for tensile strength of cohesive riverbank soil body |
| CN107462469A (en)* | 2017-09-08 | 2017-12-12 | 山西省交通科学研究院 | A kind of slope soil tensile strength on-site testing device and method of testing |
| CN108593151A (en)* | 2018-07-10 | 2018-09-28 | 浙江永阳节能技术有限公司 | A kind of calorimeter crushing tester |
| CN109406268A (en)* | 2018-09-07 | 2019-03-01 | 昆明理工大学 | A kind of ess-strain control formula soil body test for tensile strength device and method |
| CN110261086A (en)* | 2019-06-27 | 2019-09-20 | 广州黄船海洋工程有限公司 | A kind of strength test method of windlass pedestal |
| Publication | Publication Date | Title |
|---|---|---|
| CN204575457U (en) | A kind of stress-type three axle soil sample tensile strength proving installation | |
| CN103913380B (en) | All-in-one machine for testing soil engineering tension-compression strength | |
| CN105862937B (en) | One kind pressure, pull out comprehensive laboratory experiment stake bath scaled model experimental device | |
| CN203745464U (en) | A condition-controllable accelerated concrete cracking tester | |
| CN111796074A (en) | A device that can test the multidirectional deformation and expansion force of expansive soil | |
| CN206920100U (en) | A kind of rectangle round steel pipe transition mast attachment structure bidirectional load test device | |
| CN203881614U (en) | All-in-one machine for geo-technical tension-compression strength test | |
| CN109060555A (en) | A kind of concrete creep test device and analysis method based on four-point bending load | |
| RU114775U1 (en) | DEVICE FOR RESEARCH OF STRESSED-DEFORMED STATE OF SMOOTH CONIC SHELLS | |
| CN103954415A (en) | Method for measuring deflection of dry bridge | |
| CN203758842U (en) | Simple device for testing tensile strength of cohesive soil | |
| CN206002396U (en) | A kind of simple three axle soil sample stretcher strain measurement apparatus | |
| CN204101379U (en) | Material extending creep test device | |
| CN104895126B (en) | Model Internal forces calibration device and method | |
| CN106885734B (en) | Concrete material poisson ratio measuring device and method | |
| CN102589408B (en) | Hub type concrete self-shrinkage measuring device | |
| CN113063671A (en) | Device and method for measuring temperature and humidity of concrete under action of constant axial tension | |
| CN204575459U (en) | A kind of flexural member Mechanics Performance Testing device | |
| CN205384216U (en) | Adhesion strength and coefficient of friction's test device between measurement building material | |
| CN215727378U (en) | Concrete temperature and humidity measuring device under constant axial tension effect | |
| RU156561U1 (en) | DEVICE FOR MEASURING SUPPORT REACTIONS | |
| KR20160008891A (en) | Apparatus for evaluating fluidity of concrete and method for evaluating fluidity of concrete using thereof | |
| CN205175815U (en) | Brick bikini loading system of building a wall | |
| CN210571167U (en) | A new type of high-precision multi-function force gauge calibration device | |
| CN201732168U (en) | Gamma spectrometer sample testing frame |
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20150819 Termination date:20190414 |