Visualized test sample box for indoor geotechnical experiment

Abstract

The invention discloses a visualized test sample box for an indoor geotechnical experiment. The box comprises an upper box body (1), a lower box body (2), positioning pins (3) and a top cover (4); a cylindrical concave groove (21) is formed in the middle of the lower box body (2), the edge of the lower box body (2) is provided with lower box limiting holes (22), an upper box through hole (11) is formed in the middle of the upper box body (1), and the edge of the upper box body (1) is provided with upper box limiting through holes (12); the lower box limiting holes (22) are detachably connectedwith the upper box limiting through holes (12) through the positioning pins (3); the upper box body ( 1) and the lower box body (2) are both made of transparent materials. The visualized test samplebox can be used for sample testing of the indoor geotechnical direct-shear experiment and can also be suitable for sample testing of a one-dimensional consolidation experiment, and the test experimentresult is accurate and reliable; the movement state of soil under the shearing function or the compression function can be directly observed by naked eyes or digital photographing equipment, and thestructural change and displacement of the soil can be observed.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a visual sample box for indoor soil engineering tests. Background technique [0002] The sample box is an important experimental equipment for geotechnical testing. Each test instrument has a corresponding sample box. Among them, the direct shear box for the direct shear test and the compression box for the one-dimensional consolidation test are all types of sample boxes. , there are the following deficiencies in the actual application process: [0003] The direct shear test is an important geotechnical test. Through the direct shear test, the shear characteristics of the soil sample with a certain water content and compactness can be obtained under the condition of a fixed shear surface, and its shear strength parameters, including the viscosity of the soil sample, can be obtained. cohesion and internal friction angle. According to the different properties of the tes...

AI Technical Summary

Problems solved by technology

Similar to the direct shear test, in the existing one-dimensional consolidation test, the compression box is also made of copper material. During the test, the vertical deformation of the soil sample is measured by a dial indicator, and the soil deformation cannot be directly observed. Changes in the mesoscopic structure of soil particles and the displacement and deformation of soil under vertical load

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