Geotechnical engineering triaxial compression test micro-friction load force transmission plate

Abstract

The invention provides a geotechnical engineering triaxial compression test micro-friction load force transfer plate which comprises a circular bearing plate, wherein a sliding stop rod is arranged in the center of the circular bearing plate; six first rectangular grooves are uniformly distributed in the circular bearing plate along the circumferential direction in a radial shape; a third rectangular groove is formed between two adjacent first rectangular grooves; a second rectangular groove is formed between the first rectangular groove and the adjacent third rectangular groove; the first rectangular grooves, the second rectangular grooves and the third rectangular grooves are respectively and correspondingly embedded into first guide rails, second guide rails and third guide rails; two arc-shaped grooves are formed in each of the guide rails; steel balls are arranged in the arc-shaped grooves; multiple circles of slide blocks are sequentially arranged on the guide rails along the radial direction of the circular bearing plate; the slide blocks can freely slide on the guide rails along the radial direction through the steel balls. An axial load is applied to a sample through the multiple circles of automatic slide blocks, the frictional resistance between the slide blocks and the circular bearing plate is reduced through the steel balls, and the problem that the end of the sample is constrained can be well solved.

Description

technical field [0001] The invention relates to the technical field of soil mechanics indoor tests, in particular to a micro-friction load force transmission plate for geotechnical engineering triaxial compression tests. Background technique [0002] In the geotechnical triaxial test, due to the inconsistency of deformation between the soil material (sample) and the loading structure (steel structure), there will often be friction between the two (abbreviated as interface friction resistance), and the existence of interface friction resistance directly It affects the real force of the sample, affects the deformation size and shape of the sample, and even makes the test results uncertain. Existing studies have shown that in conventional triaxial tests, under a certain strain state, there are large differences in the displacement of particles in different regions of the sample, that is, the relative displacement of particles in the approximately triangular regions at the upper...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a micro-friction load force transmission plate for geotechnical engineering triaxial compression test to solve the end constraint problem caused by excessive interface friction resistance in triaxial test

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