A kind of shear stress testing device and method
A testing device and testing method technology, applied in the direction of measuring device, measuring force, instrument, etc., can solve the problem that the measuring method does not change much, the model experiment of deep sliding surface shear stress measurement, and the equipment that does not measure the deep sliding surface shear stress and other problems, to achieve the effect of simple structure and convenient operation
Active Publication Date: 2019-06-25
干飞
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Problems solved by technology
Generally speaking, in recent decades, as a classic soil shear stress measurement method, there has not been much change, and it is a pity that the deep sliding surface shear stress in model experiments cannot be measured with existing instruments. A large number of scholars have studied Various mathematical models have been proposed for the distribution of shear stress on the structural surface, but they are all theoretically derived results. Experiments have shown that there are almost no shear stress values at local points on the structural surface. The reason is that there is no measurement of the deep sliding surface shear stress. stress equipment
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[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0027] Such as figure 1 and figure 2 As shown, a shear stress test device includes a carrier 3, a carrier 1, a sensor 4 and a strain gauge 6. The carrier 3 is located in the carrier 1 and can slide in the carrier. The sensor 4 is annular, and its inner wall A strain gauge is attached, and the strain gauge is connected to the strain gauge 6 through the line 5 . The sensor 4 is located in the carrier 1 and can be squeezed by the sliding of the carrier 3 in the carrier 1 .
[0028] Preferably, the carrier 3 is in the shape of a rectangular block with a size of 50mmx100mmx20mm. The carrier 1 is in the shape of a rectangular box with an open top. A roller row 2 is arranged between the carrier 3 and the side walls of th...
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The invention belongs to the field of geotechnical engineering experiment shearing surface local point stress tests and specifically discloses a shear stress testing device and method. The shear stress testing device comprises a carrying body, a supporting body, a ring-shaped sensor and a strain meter, wherein the carrying body is positioned in the supporting body and can slide in the supporting body, a strain gage is attached to the inner wall of the sensor and is connected with the strain meter via a line, and the sensor is positioned in the supporting body and can be extruded by the supporting body a sliding manner in the supporting body. The beneficial effects of the shear stress testing device are that the shear stress testing device is simple in structure and convenient to operate, and shear stress of local points on a geotechnical structure surface can be measured.
Description
technical field [0001] The invention belongs to the field of local point stress testing of shear planes in geotechnical engineering experiments, in particular to a shear stress testing device and method. Background technique [0002] The method of measuring the shear stress of the specimen in the geotechnical engineering structural engineering test: use the strain gauge to measure the strain in the test formula and convert the shear stress through the formula, which belongs to indirect measurement. As we all know, structural specimens (concrete specimens, steel structure specimens, etc.) are inherently convenient and reliable for patching. This measurement method is still used today, and a large number of scientific research results have been obtained. [0003] In geotechnical engineering tests, sensors are used to measure the shear stress of soil, and the results are in the average sense. For example, the ordinary direct shear experiment uses the deformation of the stress ...
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IPC IPC(8): G01L1/00
CPCG01L1/00
Inventor 干飞叶晓明阴可
Owner 干飞