Multi-working-condition torsion shearing property testing device and method of pile or anchor and rock-soil body interface

Abstract

The invention discloses a multi-working-condition torsion shearing property testing device and method of a pile or anchor and rock-soil body interface. The multi-working-condition torsion shearing property testing device comprises a test sample, a confining pressure and test sample fixing device, a torque applying device, a force transmission device and a measurement device. A motor, a gear and agear rack mechanism are used for realizing instantaneous torsion shearing; the motor, an eccentric wheel and a rocking bar mechanism are used for realizing circulating torsion shearing; a gear rack weight is loaded to generate a constant torque and realize creep torsion shearing; a gear rack is provided with a displacement reference surface and a change condition of a torsion angle of the pile oranchor and rock-soil body interface is monitored through monitoring the horizontal displacement of the gear rack. The testing device provided by the invention is clear in principle and simple in structure; the preparation of the test sample and separation of a test are realized and the testing efficiency is improved; the testing device can be used for testing the instantaneous torsion shearing property, circulating torsion shearing property and torsion shearing creep property of the pile or anchor and rock-soil body interface, so that the instantaneous and long-period interface anti-torsion shearing strength of a pile or an anchor is determined.

Description

technical field [0001] The present invention relates to the shear characteristic testing technology of rock-soil body and structure body interface in industries such as housing construction, transportation, mining, water conservancy and hydropower, etc., and particularly relates to a pile or anchor and rock-soil body interface multi-working-condition torsional-shear characteristic test device and method. Background technique [0002] Anchor and pile foundation technology are widely used in various fields of geotechnical engineering due to their advantages of safety, reliability, mature technology and convenient construction. There are certain differences between the two in terms of design calculation and construction technology, but in terms of load transfer and shape Its shape is usually cylindrical, and its load-bearing performance mainly depends on the shear characteristics of the pile or anchor and the rock-soil interface. So far, at home and abroad, the shear character...

AI Technical Summary

Problems solved by technology

However, so far, there has not been a simple and easy-to-operate device in China that is consistent with the actual working conditions of pile foundations or anchors to test the instantaneous torsional shear characteristics, cyclic torsional shear characteristics and Creep Torsional Shear Properties

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