Ring shear apparatus for circular-ring-shaped soil sample

Abstract

The invention discloses a ring shear apparatus for a circular-ring-shaped soil sample. The ring shear apparatus comprises a working frame, a driving device and a pressurizing device and further comprises a rotary disk, a fixed sleeve, a pressurizing cake, a torque sensor and a torque sensor fixing frame; a cylindrical rotary table is fixed in the center of the disk of the rotary disk; the rotary disk is in transmission connection with the driving device; the fixed sleeve is arranged above the rotary disk and fixed to a workbench; a fixed table can be rotationally fixed on the rotary table; a through hole is formed in the center of the pressurizing cake; pressurizing connecting blocks are arranged on the two sides of the pressurizing cake; the pressurizing cake is connected with the pressurizing device; a ring-shaped bulge is arranged at the lower end of the pressurizing cake; supporting rods are fixed on the workbench; the torque sensor fixing frame is fixed on the supporting rods; the torque sensor is fixed on the torque sensor fixing frame; a positioning pin is arranged at the lower end of the torque sensor; the upper end of the fixed table is connected with a connecting column; a positioning hole is formed in the upper end face of the connecting column; the positioning pin falls into the positioning hole. By adopting the ring shear apparatus provided by the invention, shearing strength of the circular-ring-shaped soil sample in the annular direction can be measured, so as to conveniently know mechanical properties of soil and sand stone more comprehensively.

Description

technical field [0001] The invention relates to a test instrument, more specifically a shearing instrument in the circular direction of a soil sample, which belongs to the technical field of soil engineering test instruments. Background technique [0002] The ultimate ability to resist shear failure is the research content of soil mechanics. To measure the shear strength of soil and gravel in the laboratory, shearing instruments are generally used for testing. In the existing shearing test, the shearing drive is started, and a force in the direction of a horizontal line is applied to the sample in the shearing box until the test is completed. sample fracture, it can determine the parameters of the shear strength of the sample. However, in order to have a more comprehensive understanding of the mechanical properties of soil, sand and gravel, it is best to measure the shear strength in the circular direction of the sample. At present, no relevant instruments for measuring the...

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Problems solved by technology

However, in order to have a more comprehensive understanding of the mechanical properties of soil, sand and gravel, it is best to measure the shear strength in the circular direction of the sample. At present, no relevant instruments for measuring the shear strength in the circular direction have been found.

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