Model box used for large scale dimension shaking table test, model experiment device used for large scale dimension shaking table test and usage method of model experiment device

Abstract

The present invention discloses a model box used for a large scale dimension shaking table test. The model box comprises a box body, the box body is a cuboid structure of which the top surface is open, the bottom surface of the box body comprises a flexible steel plate, and the side surface comprises a box iron frame, a rigid steel plate and an angle iron frame. The box iron frame, the rigid steelplate and the angle iron frame are welded orderly from inside to outside, and the flexible steel plate is welded at the bottom of the rigid steel plate. The model box is light in dead-weight, high intest result accuracy and wide in application range, combines the flexibility and the rigidity, and adopts the inner and outer frames to combine into a model box body structure, thereby saving the rawmaterials and improving the overall rigidity of the model box. By applying a model box test device of the present invention, the model dynamic response characteristics under the action of different earthquake loads can be obtained, the influence of a model box body boundary effect is reduced, the propagation process of an earthquake wave in the model box can be reproduced really, and the model box, the model experiment device and the usage method of the model experiment device can be widely used for researching the rock-soil slope and tunnel mechanisms of deformation and failure.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a model box for large-scale shaking table tests applied in fields such as foundation engineering, tunnel engineering, and slope engineering, as well as a model experiment device and a use method thereof. Background technique [0002] The model box is a very practical test device for seismic research in the field of geotechnical engineering. However, due to the influence of the weight and size of the model box, the data of the shaking table model box test is very unsatisfactory, especially for small-scale shaking tables. Model tests, such as pile foundation shaking table tests, mixed slope shaking table tests, bridge and tunnel connection shaking table tests, etc. [0003] At present, in the shaking table model box test, the volume of the model box is generally small, and it is difficult to achieve the expected effect of the test. The main reason is th...

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Problems solved by technology

[0002] The model box is a very practical test device for seismic research in the field of geotechnical engineering. However, due to the influence of the weight and size of the model box, the data of the shaking table model box test is very unsatisfactory, especially for small-scale shaking tables. Model tests, such as pile foundation shaking table tests, mixed slope shaking table tests, bridge and tunnel connection shaking table tests, etc.

[0003] At present, in the shaking table model box test, the volume of the model box is generally small, and it is difficult to achieve the expected effect of the test. The main reason is the influence of the boundary effect, because the research model is close to the boundary of the model box, and the site deformation is the main factor for the underground model structure. Control factors, strictly control the displacement of the model structure, and cannot truly simulate the dynamic response characteristics of the model under earthquake action

At present, making the model box larger will inevitably increase the weight of the model box. Under the limit load that the shaking table can bear, it will affect the filling height of the surrounding rock, resulting in unsatisfactory test results.

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