Directional low friction based large indoor self-balancing direct shear instrument and working method thereof

A self-balancing, low-friction technology, applied in the direction of using a stable shear force to test the strength of materials, instruments, scientific instruments, etc. Strength and other issues, to achieve the effect of accurate test results and simple structure

Pending Publication Date: 2019-03-01
FUZHOU UNIVERSITY
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Problems solved by technology

[0003] However, the conventional indoor small direct shear instrument is limited by its own size and cannot truly reflect the size effect of the shear strength of the soil, let alone measure the shear strength of soil samples containing gravel.
If the indoor direct shear instrument is enlarged, at least the following

Method used

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  • Directional low friction based large indoor self-balancing direct shear instrument and working method thereof
  • Directional low friction based large indoor self-balancing direct shear instrument and working method thereof
  • Directional low friction based large indoor self-balancing direct shear instrument and working method thereof

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[0021] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

[0022] like Figure 1~5 As shown, a directional low-friction self-balancing large-scale indoor direct shearing instrument includes an upper shear box 1 and a lower shear box 2 for containing soil samples, the upper shear box has no bottom cover, and the lower The shearing box has no top cover, the bottom of the upper shearing box is supported on the top of the lower shearing box by the first rolling body and is driven by the horizontal loading jack 3 to move in translation along the shearing direction; the inner top of the upper shearing box is provided with a The vertical loading jack 4 drives the shear box cover plate 5 for lifting movement, and the top of the vertical loading jack moves in translation along the shearing direction on the frame plane above it ...

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Abstract

The invention relates to a directional low friction based large indoor self-balancing direct shear instrument. The directional low friction based large indoor self-balancing direct shear instrument comprises an upper shearing box and a lower shearing box for holding soil samples, the upper shearing box has no bottom cover, the lower shearing box has no top cover, and the bottom of the upper shearing box is supported at the top of the lower shearing box through a first roller and is driven by a horizontal loading jack to do translational movement in the shearing direction; a shearing box coverplate, driven by a vertical loading jack to move up and down, is arranged at the inner top of the upper shearing box; the top of the vertical loading jack does translational movement on the frame plane above the vertical loading jack in the shearing direction through a second roller. The directional low friction based large indoor self-balancing direct shear instrument has a simple structure.

Description

technical field [0001] The invention relates to a directional low-friction self-balancing large-scale indoor direct shear instrument and a working method thereof, belonging to the field of geotechnical engineering measuring equipment. Background technique [0002] In the field of geotechnical engineering, shear failure is the main mode of soil instability, and it is particularly important to accurately measure the shear strength index of soil in geotechnical engineering construction. Commonly used shear strength index measurement methods include: in-situ cross plate test, in-situ large-scale direct shear test, indoor triaxial compression test, indoor small-scale direct shear test, etc. Among them, the indoor small direct shear instrument has the advantages of simple structure and convenient operation, and is widely used. [0003] However, the conventional small indoor direct shear instrument is limited by its own size and cannot truly reflect the size effect of the shear st...

Claims

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Application Information

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IPC IPC(8): G01N3/24G01N3/02
CPCG01N3/02G01N3/24G01N2203/0042G01N2203/0025
Inventor 邓涛高翔张瑾璇杨圣敏关振长
Owner FUZHOU UNIVERSITY
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