Ring shear test device

Abstract

The invention is applicable to the technical field of rock-soil detection, and provides a ring shear test device, which comprises: a sample accommodating mechanism for accommodating a to-be-detected sample through an assembled structure and realizing the movement of the to-be-detected sample; a torque transmission mechanism which is used for driving all parts of the sample accommodating mechanismto move relatively; a torque sensing mechanism which is used for sensing shearing stress generated when the torque transmission mechanism drives all parts of the sample containing mechanism; a vertical load mechanism which is used for generating a load along the vertical direction of the contact surface of the to-be-detected sample in the sample accommodating mechanism; and a vertical displacementsensing mechanism which is used for sensing displacement formed by state change caused by sample shearing. The ring shear test device is wide in application range and experimental conditions; the contact surface strength relationship under different load and deformation conditions can be simulated and is close to engineering practice, and the obtained data is real and credible; and a shear displacement-shear stress relationship and a shear displacement-normal displacement relationship can be obtained at the same time.

Description

technical field [0001] The invention belongs to the technical field of rock and soil detection, and in particular relates to a ring shear test device. Background technique [0002] The mutual contact between structure and soil cannot be avoided in every geotechnical engineering. Due to the huge difference in strength and physical properties between soil and structure, under the action of external load, the contact surface between the two is often more prone to damage than the soil and structure itself, which will affect the safety and stability of the project. [0003] It is very important to measure the relevant mechanical parameters of the contact surface between soil and different structures through laboratory tests, and to reveal the load transfer mechanism and the change of mechanical properties during the deformation process of the contact surface under different working conditions. Building structures are often subjected to cyclic loads under the action of large exte...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a ring shear test device, which aims to solve the problem that the traditional ring shear tester can only realize the contact surface test under a fixed vertical load, and cannot simultaneously perform the cyclic ring shear of the contact surface under a fixed normal stiffness. test question

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