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...

Examples

Embodiment Construction

[0028] The following is attached Figure 1-9 , to illustrate specific embodiments of the present invention.

[0029] A multi-array shaking table model test device for an underground structure, installed on a shaking table, including a first end box 1, a second end box 2, a middle box 3, a sliding ball joint 4, a hinge device 5, and a slide rail 6.

[0030] The bottoms of 1 and 2 of the end box are connected with the vibrating table by bolts, and several holes are arranged on the bottom of the end box.

[0031] The end boxes 1 and 2 are composed of U-shaped frames stacked up and down, and the layers are connected by slide rails 6 to simulate horizontal shearing of soil. The slide rail 6 is composed of upper and lower parts spliced ​​together, and is connected with the U-shaped frame by bolts. A number of bolt holes are reserved in the bottom of the slide rail 6, and the maximum shear displacement of the soil can be artificially limited by installing bolts in the bolt holes. ...

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...

Examples

Embodiment Construction

[0028] The following is attached Figure 1-9 , to illustrate specific embodiments of the present invention.

[0029] A multi-array shaking table model test device for an underground structure, installed on a shaking table, including a first end box 1, a second end box 2, a middle box 3, a sliding ball joint 4, a hinge device 5, and a slide rail 6.

[0030] The bottoms of 1 and 2 of the end box are connected with the vibrating table by bolts, and several holes are arranged on the bottom of the end box.

[0031] The end boxes 1 and 2 are composed of U-shaped frames stacked up and down, and the layers are connected by slide rails 6 to simulate horizontal shearing of soil. The slide rail 6 is composed of upper and lower parts spliced ​​together, and is connected with the U-shaped frame by bolts. A number of bolt holes are reserved in the bottom of the slide rail 6, and the maximum shear displacement of the soil can be artificially limited by installing bolts in the bolt holes. ...

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