Suspension type multi-dimensional input horizontal multi-directional shearing model casing device

Abstract

The invention discloses a suspension type multi-dimensional input horizontal multi-directional shearing model casing device, belonging to the technical field of civil engineering. The suspension type multi-dimensional input horizontal multi-directional shearing model casing device comprises a rigid suspension bracket, a rigid bottom plate and a model casing body, wherein the top of the model casing body is hoisted by the suspension bracket and is suspended on the rigid bottom plate, the model casing body comprises more than ten layers of layer structures and a beam frame, wherein each layer structure is rigid and light, and planes of the layer structures are of any same shape, all layer structures are vertically arranged in parallel at equal intervals and are serially connected by using a film or cable, and the film or cable is suspended on the rigid beam frame; the rigid bottom plate is fixedly connected with the rigid suspension bracket and connected with a vibration platform surface together; the beam frame is arranged on the suspension bracket through universal trundles or universal joints in a spanning manner; and the suspension bracket is a rigid wall and is fixedly connected with the rigid bottom plate, and the top of the suspension bracket is provided with a vertical vibration isolation support and a height regulating mechanism. According to the invention, the interference of the model casing to model soil is reduced, the vibration simulation in the vertical direction can be tested, and the model casing is tested in a three-dimensional vibrating manner.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a suspended layered multi-directional shear model box device used for shaking table tests of underground structures. Background technique [0002] In the case of actual structure-foundation dynamic interaction, the foundation has no boundary, but in the shaking table test, only a model box of limited size can be used to contain the model soil. In this way, due to the fluctuation reflection on the interface between the soil and the box body and the difference between the soil-model box system and the actual foundation vibration form, certain errors are brought to the test results, that is, the "model box effect". In order to eliminate the model box effect, the model box is designed as a one-way or two-way layered shear model box, so that the model box can undergo layered shear deformation under the action of an earthquake, and the two-way layered shear model box is input i...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a suspension type multi-dimensional input horizontal multi-directional shear model box device that improves the rigidity of the suspension bracket and utilizes the vibration isolation support to eliminate the influence on the vertical direction of the model soil, so as to overcome the above-mentioned deficiencies in the existing experimental box

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