Rotary ball stacked ring type shear box and ring shear apparatus with same

Abstract

The invention relates to a rotary ball stacked ring type shear box and a ring shear apparatus with the same, and the rotary ball stacked ring type shear box comprises: an upper box, and a lower box, wherein an inner movable ring, an outer movable ring which are arranged in the lower box, the inner movable ring and the outer movable ring are each of a stacked ring structure, and each stacked ring structure comprises a plurality of ring bodies which are sequentially stacked together in the direction of the center line of the outer movable ring; and balls which are uniformly distributed on the contact surfaces of every two adjacent ring bodies. According to the device, the ball stacked ring type shear box is arranged, the outer movable ring and the inner movable ring are arranged in the lower box of the shear box and are both of stacked ring structures, the rotary table rotates to drive the lower box to rotate, and the stacked ring structures in the lower box rotate along with the lower box, so that the lateral friction force between the side wall of the lower box of the shear box and an annular sample is overcome in the test process, and the shear box is high in practicability and worthy of popularization.

Description

technical field [0001] The invention relates to the field of rock and soil engineering mechanical performance test equipment, in particular to a rotating ball stacked ring shear box and a ring shear instrument with the shear box. Background technique [0002] The ring shear instrument is a kind of geotechnical test equipment that can measure the mechanical properties of the soil under the condition of large shear displacement. It is mainly used to study the residual strength properties of the soil after the shear plane is formed. The study of the mechanical mechanism of geological disasters and the study of the progressive failure process of the slope has important academic significance and engineering application value. [0003] In the conventional ring shear test, the area of ​​the shear surface of the sample is kept constant during the test, and large deformation shear occurs under continuous displacement. During the test, vertical pressure and torsional shear are applied...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of rotating ball stacked ring shear box and the ring shear instrument with the shear box, because in the prior art, there is a certain friction force between the side wall of the sample and the inner wall of the sample box, which affects the The problem of test accuracy

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