Multidirectional Dynamic Shear Mechanics Test System for Rock Mass Structural Surface Based on Shaking Table Principle

Abstract

The invention provides a multi-directional dynamic shear mechanics testing system for rock mass structural surfaces based on the principle of a vibrating table, including a vibrating table, a foundation is arranged around the vibrating table, and an actuator is arranged on the side walls around the vibrating table , the top of the foundation is provided with a reaction frame, a hydraulic drive device is provided on the reaction frame, and an upper shear box is provided on the protruding end of the hydraulic drive device, and the upper shear box is located directly above the lower shear box; the vibration table It can realize simultaneous translation along the x and y directions and rotation around the z axis. The high-precision three-way servo control system can realize the simulation of seismic strain rate and multi-frequency loading, so as to realize multi-directional independent stress loading. The test sample is in the The mechanical properties under multi-directional earthquakes are helpful to reveal the dynamic instability mechanism of slopes, and solve the problem that the direct shear instrument in the prior art cannot simulate the dynamic response of rock and soil under real earthquake loads because it cannot realize multi-directional dynamic loading. question.

Description

technical field [0001] The invention relates to the field of rock and soil mechanics testing, in particular to a multi-directional dynamic shear mechanics testing system based on a shaking table principle. Background technique [0002] Due to the complex geological environment, climatic conditions and other internal and external dynamic forces in the region, the internal structural plane of the rock slope in this region is developed. The dislocation or sliding along the structural plane leads to the reduction of the strength of the structural plane, which in turn causes slope instability, causes geological disasters, and brings heavy property losses, casualties and ecological environment damage. Therefore, engineers and technicians will face many seismic problems in geotechnical engineering, and at the same time will face severe problems in the prevention and control of geotechnical disasters. The research on dynamic strength attenuation and disaster prevention and control ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned problems in the prior art, the present invention provides a multi-directional dynamic shear mechanics testing system for rock mass structural surfaces based on the principle of a shaking table, which solves the problem that the direct shear instrument in the prior art cannot simulate due to the inability to realize multi-directional dynamic loading. Problems of Dynamic Behavior of Rock and Soil Mass under Real Earthquake Loading

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