Rock-soil mass direct-shear test apparatus capable of quickly and accurately compressing

A direct shear tester, a technology of rock and soil mass, applied in the direction of using a stable shear force to test the strength of materials, instruments, scientific instruments, etc., can solve the problem of uneven distribution of stress and strain, uneven distribution of applied stress, and stress application. Small range and other problems, to achieve high repeatability of measurement and positioning accuracy, eliminating cumbersome and unstable operations, and small electromechanical time constants

Pending Publication Date: 2017-06-13
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the biggest disadvantage of the direct shear test is the inhomogeneous distribution of the internal stress and strain of the sample, the small range of stress applied, the uneven distribution of the applied stress, and the cumbersome test process.

Method used

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  • Rock-soil mass direct-shear test apparatus capable of quickly and accurately compressing
  • Rock-soil mass direct-shear test apparatus capable of quickly and accurately compressing

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Embodiment Construction

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] Please refer to figure 1 and figure 2 , an embodiment of the present invention provides a fast and accurate pressurized rock and soil direct shear tester, comprising a platform 1 and a preset slide rail 2 arranged in the middle of the platform 1, in one embodiment, the preset rail 2 includes A long side 21, a lower shear box 3 is arranged above the preset slide rail 2, and the lower shear box 3 slides along the direction of the long side 21, and an upper shear box 4 is arranged above the lower shear box 3, and the lower shear box 4 The opposite sides of the upper part of the box 3 are provided with grooves 31 along the direction of the preset slide rail 2, and balls 32 are arranged in the grooves 31. The bottom of the lower shear box 3 is provid...

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Abstract

The invention discloses a rock-soil mass direct-shear test apparatus capable of quickly and accurately compressing. The rock-soil mass direct-shear test apparatus comprises a platform and a default sliding rail arranged in the middle of the platform, wherein the default sliding rail comprises a long side; a lower shear box is arranged at the upper part of the default sliding rail; the lower shear box slides along the long side of the default sliding rail; an upper shear box is arranged at the upper part of the lower shear box; a rigid transfer rod is arranged in the normal direction of the upper shear box; the rigid transfer rod is fixedly connected with a normal compression system; the normal compression system transfers default stress generated by the normal compression system to the normal direction of the upper shear box through the rigid transfer rod; one side of the lower shear box is connected with a tangential compression system; the other side of the lower shear box is connected with a displacement measurement system and a pull pressure measurement system. The rock-soil mass direct-shear test apparatus can quickly and accurately compress, the direct-shear test efficiency and accuracy are improved and the rock-soil mass direct-shear test apparatus is suitable for research on various rock-soil mass shear properties.

Description

technical field [0001] The invention relates to a direct shear tester for rock and soil, in particular to a rapid and accurate pressure direct shear tester for rock and soil. Background technique [0002] The shear failure of rock and soil is the most important cause of geotechnical engineering instability, and the shear strength parameters of rock and soil are important factors that must be considered in major engineering design and stability analysis. Rapid and accurate determination of shear strength parameters of rock and soil is of great significance in geotechnical engineering construction and scientific research. [0003] Direct shear test and triaxial test are currently the most common methods for determining shear strength parameters, and direct shear test is the most widely used for its advantages of simple operation and wide application range. However, the biggest disadvantage of the direct shear test is the inhomogeneous distribution of internal stress and strai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0044
Inventor 姚远王璐李瑶陈晓龙李立辰姚文敏和大钊
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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