Geosynthetic material drawing/direct shearing test device and test method
A technology of geosynthetics and pull-out testing, which is applied in the field of measuring instruments, can solve the problems of not being able to express the friction coefficient of geosynthetics well, and the definition of friction coefficient is ambiguous, so as to achieve fast and effective friction coefficient, simple and convenient measurement, The effect of design science
Inactive Publication Date: 2018-05-01
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0002] In recent years, with the continuous increase of geosynthetics products, reinforced materials are widely used in various fields such as roads, railways, ports, coal mines, etc., but the research results on the interaction between reinforcement and soil and the friction coefficient of geosynthetics under different soil properties There is a large dispersion, and the main research methods are direct shear test and pull test, but the definition of friction coefficient is unclear during the test process, and the obtained results cannot well represent the friction of geosynthetics. coefficient
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[0039] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0040] Such as figure 1 Shown, a geosynthetics testing device, the device consists of three parts.
[0041]One part is a pendulum instrument, the device presents a semi-fan structure, and the other part is a pendulum instrument (belonging to the existing structure), the device presents a semi-fan structure, the left half of which is fan-shaped, and there are corresponding scales along the side of the fan, and the right half is a Swing rod, one end of the swing rod is equipped with an impact hammer device, and the other end is connected with the fan-shaped structure; specifically, it includes a fan-shaped scale 10, a swing rod 2, a detachable impact hammer 3 installed at the right end of the swing rod, and installed at the left end of the swing rod 2 The pointer 1 is equipped with a single device ratchet backstop, which stops when the impact h...
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The invention relates to a geosynthetic material drawing / direct shearing test device and a test method. The device consists of three parts, wherein the first part is a pendulum instrument, the deviceis of a semi-sector structure, the left half part of the device is a sector, the edge of the sector is provided with a corresponding scale, the right half part is an oscillating bar, one end of the oscillating bar is provided with an impact hammer device, and the other end is connected with the sector structure; the second part is a geosynthetic material loading device, two boxes consisted of a shearing box for simulating different soil textures and a fixture, and the fixture is connected with a hook on the bottom of the impact hammer through a thin steel rope which can not be extended; the third part is a multifunctional base, the base is used for connecting the first part with the second part, the base is provided with a calibrated scale, the middle of the base is provided with two slideways, the slideways are connected with pulleys on the bottom of the fixture, and the right end of the base is provided with a clamping tool for fixing a geogrid as the geogrid is sheared. According tothe device, different soil texture situations are simulated so as to measure the friction coefficient of the geosynthetic material under different soil texture situations.
Description
technical field [0001] The invention relates to the field of measuring instruments, in particular to a pulling / direct shearing test device and a test method for geosynthetics. Background technique [0002] In recent years, with the continuous increase of geosynthetics products, reinforced materials are widely used in various fields such as roads, railways, ports, coal mines, etc., but the research results on the interaction between reinforcement and soil and the friction coefficient of geosynthetics under different soil properties There is a large dispersion, and the main research methods are direct shear test and pull test, but the definition of friction coefficient is unclear during the test process, and the obtained results cannot well represent the friction of geosynthetics. coefficient. Contents of the invention [0003] The purpose of the present invention is to provide a convenient and simple measuring device and test method for measuring the friction coefficient o...
Claims
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IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 韩鹏举张凯
Owner TAIYUAN UNIV OF TECH