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Test device for biaxial loading using shear instrument and method of use thereof

A test device and shearing instrument technology, which is applied in the direction of using a stable shear force to test the strength of materials, measuring devices, instruments, etc. The effect of easy promotion and application, simple structure and easy connection

Active Publication Date: 2020-08-07
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device has a simple structure and low cost, and can be used with a uniaxial testing machine for testing. However, the manual pressure pump can control the loading of the test force to achieve accurate dynamic adjustment of the lateral stress value of the specimen, and there are problems with the reliability of the test results.

Method used

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  • Test device for biaxial loading using shear instrument and method of use thereof
  • Test device for biaxial loading using shear instrument and method of use thereof
  • Test device for biaxial loading using shear instrument and method of use thereof

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Embodiment 1

[0044] A test device for biaxial loading using a shearing instrument and a method for using the same. The test device described in this embodiment consists of a loading system and a deformation monitoring system. The size of the test piece (11) in this embodiment is 100mm×100mm×100mm.

[0045] Such as figure 1 As shown, the loading system is composed of 2 external joints (1) of the pressure rod, 2 pressure heads (2) with spherical joints, a base (4) and an upper pressure head (9).

[0046] Described base (4) is square steel plate, has T-shaped groove (3) inwardly along the vertical line of four sides of square steel plate respectively, and the section of four T-shaped grooves (3) is identical, and the T-shaped groove (3) The section is inverted "T" shape.

[0047] Such as figure 1 and figure 2 As shown, the outer joint (1) of the pressure rod is cylindrical in shape, one end of the cylinder is a concave spherical surface, the other end of the cylinder is a plane, and a s...

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Abstract

The present invention relates to a test device using a shearing instrument for double-axis loading and a using method thereof. The test device comprises a loading system and a deformation monitoring system. The loading system comprises two presser outer joints (1), two pressure heads (2) with spherical hinges, a base (4) and an upper pressure head (9); the deformation monitoring system comprises acomputer (5), a strain gauge (6), ten pen-type displacement sensors (7) and two sensor brackets (8). The using method of the test device is as follows: mounting the loading system; fixing a test piece (11); installing the deformation monitoring system; loading and performing deformation monitoring; and acquiring and processing test data. The test device has the characteristics of simple structure, low cost, convenient operation and meeting the test requirements of different sizes of test pieces, and the device can ensure the accuracy of the double-axis test data.

Description

technical field [0001] The invention belongs to the technical field of biaxially loaded test devices. In particular, it relates to a test device for biaxial loading by using a shearing instrument and a use method thereof. Background technique [0002] The uniaxial test and triaxial test of rock are widely used in the research field of rock mechanical properties as basic test methods. However, in actual rock mass engineering, the roadway surrounding rock, shaft wall and chamber surrounding rock are all in a state of bidirectional stress. Generally, only uniaxial compression or triaxial compression is performed on the rock under such a loaded state. The test cannot accurately reflect the mechanical properties of the rock under the bidirectional loading state, and it is unreasonable to apply the obtained rock mechanical parameters to the experimental research or engineering design. shaft test. At present, there are researches on rock biaxial test and biaxial equipment. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24G01N3/02G01B21/32
CPCG01B21/32G01N3/02G01N3/24G01N2203/0025
Inventor 叶义成王为琪元宙昊陈虎李鹏程胡南燕罗斌玉王其虎
Owner WUHAN UNIV OF SCI & TECH
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