Prefabricated continuum model box for simulating underground structure under combined action of fault and seismic oscillation

Abstract

The invention discloses a prefabricated continuum model box for simulating an underground structure under the combined action of fault movement and seismic oscillation, and belongs to the field of rock-soil seismic engineering. The device comprises two end boxes arranged on two adjacent vibration table tops and a middle box connected with the two end boxes. The end box is a layered shearing box formed by connecting multiple layers of U-shaped frames, the adjacent frames are connected through sliding rails, and horizontal shearing of a soil body can be effectively simulated. The middle box is a flexible connection box and is composed of a plurality of layers of rectangular steel frames, all the frames are connected through telescopic devices, the end boxes and the middle box are connected through telescopic devices, meanwhile, sliding ways are arranged at the corresponding connecting positions, and the influence of fault movement is simulated through relative displacement between all the frames. In order to reduce the friction effect between the bottom of the model box and a supporting bracket, two sliding spherical hinges are installed below each frame of the middle box. And the model device and the middle box are placed on the supporting bracket together, so that the bearing capacity of the model device is effectively increased.

Description

technical field [0001] The invention provides a multi-array shaking table model test device for an underground structure, belongs to the field of geotechnical earthquake engineering, and relates to a prefabricated assembly model box for simulating an underground structure under the joint action of fault dislocation and earthquake. Background technique [0002] With the large-scale development and construction of underground structures in my country, their seismic safety has become a hot research issue in the field of earthquake engineering. Most of the previous studies only considered the dynamic response of underground structures under the action of faults or seismic wave propagation, and reports on more realistic simulation studies affected by both fault dislocation and seismic wave propagation are relatively rare. [0003] In the seismic research of underground structures, it has become an effective means to study the seismic performance of underground structures by means...

AI Technical Summary

Problems solved by technology

Most of the previous studies only considered the dynamic response of underground structures under the action of faults or seismic wave propagation, and reports on more realistic simulation studies affected by both fault dislocation and seismic wave propagation are relatively rare.

Images