Direct shear and composite shear test device

Abstract

The invention discloses a direct shear and composite shear test device and belongs to the field of civil engineering test equipment. The direct shear and composite shear test device comprises a shearassembly. The shear assembly is arranged in a counterforce frame. The shear assembly comprises a first base, a first lower roll ball plate, a lower shear box, a first pad plate, an upper roll ball plate and a second pad plate. The first base is fixedly arranged on the ground; the first lower roll ball plate is arranged on the top portion of the first base; the lower shear box is arranged on the top portion of the first lower roll ball plate; the lower shear box can slide along the length direction of the first lower roll ball plate; the lower shear box is provided with an accommodation tank with an upward opening; an upper shear box is arranged on the top of the lower shear box; and the upper shear box and the lower shear box can slide oppositely in the length direction of the first lowerroll ball plate. The device provides a reliable means for structural design in obtaining shear strength, shear deformation, shear modulus and the like, thereby providing a guarantee for improving structure safety.

Description

technical field [0001] The invention belongs to the field of civil engineering test equipment, in particular to a direct shear and compound shear test device. Background technique [0002] The strength and deformation of the specimen under the action of direct shear and combined shear is an important mechanical property. Revealing the failure mechanism of the structure during the shear process is not only of great significance to the mechanical failure analysis of the structure, but also to guide the design of engineering structures. very important. It can be seen from the literature at home and abroad that due to limited conditions, there is no special test equipment, resulting in very little experimental research on the specimen under shear, so the only way to form the shear weak surface is by processing the specimen, that is, using a rectangular short beam Direct shear, Z-shaped specimen with single shear plane, four-point force on notched beam, and thin-walled cylinder ...

AI Technical Summary

Problems solved by technology

Therefore, based on the lack of a reasonable set of direct shear and composite shear loading devices, it is necessary to develop a direct shear and composite shear test device to study the shear strength and shear strength of materials under direct shear and composite shear. Performance, revealing the shear failure mechanism of the structure, and providing a theoretical basis for guiding engineering practice

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