Ultra-large type geotechnical engineering three-dimensional model test system

Abstract

The invention relates to an ultra-large type geotechnical engineering three-dimensional model test system, which comprises an ultra-large type model test device, a hydraulic loading system and a stress displacement test system, wherein the hydraulic loading system and the stress displacement test system are connected with the ultra-large type model test device respectively; the ultra-large type model test device comprises a door-type frame; the lower end of the door-type frame is arranged on a bottom plate device; and a model reverse wall positioned on the lower part of the door-type frame isarranged on the bottom plate device. The ultra-large type geotechnical engineering three-dimensional model test system has the advantages that: 1) the ultra-large type geotechnical engineering three-dimensional model test system has compact integrated structure, high strength and large rigidity and can bear kiloton reverse force; 2) the ultra-large type geotechnical engineering three-dimensional model test system can satisfy the requests of the different height tests; 3) the bottom plate is assembled and provided with a T-shaped slide groove; and the reverse wall can be expanded front and back or left and right or fixedly shrunk so as to meet requirements on different model sizes; 4) the model test device is conveniently mounted and dismounted to finish different plane tests; 5) a stress displacement test system can automatically and highly-precision collect and analyze the test result, which is conveniently operated; and 6) the large three-dimensional model tests for crossed tunnels are accomplished.

Description

technical field [0001] The invention relates to a super-large geotechnical engineering three-dimensional model test system, which mainly provides a test device and a loading and testing system for underground geotechnical engineering model tests. Background technique [0002] The geomechanics model test is beneficial to highlight the main contradiction in the complex test process, and it is easy to grasp and discover the inner relationship of the phenomenon. Abroad, experts headed by Furman Green created the engineering geomechanics model test technology in the Italian Structural Model Test Institute. Subsequently, countries such as the United States, Germany, France, the United Kingdom, and Japan also carried out a large number of model test studies. In China, Tsinghua University, the Third Research Institute of the General Staff Corps of Engineering, Wuhan University, Shandong University and many other scientific research institutes have successively carried out geomechan...

AI Technical Summary

Problems solved by technology

[0016] 1. The structure of the existing model device is simple, the size is generally not adjustable, and the adjustable operation is relatively cumbersome, which is inconvenient for testing

[0017] 2. The test space of the existing model device is small, and it is difficult to realize the large-scale model test research of large cross underground tunnels

[0018] 3. The device has a single function and can only perform plane or three-dimensional model tests, and cannot be freely adjusted according to the size of the test model

[0019] 4. The existing model test device cannot be split into two test devices for testing separately

[0020] 5. The hydraulic loading system and test system are relatively backward, the degree of digital automation is not high, and the accuracy of test loading and test results is low

[0021] 6. The size of the reaction bench device is small, the stiffness and strength are small, it cannot provide high reaction force, and cannot achieve high stress loading

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