Physical model test equipment and method for simulating foundation pit excavation

A technology of test equipment and physical model, which is applied in the direction of basic structure test, soil material test, material inspection product, etc., and can solve the problems that the excavation cannot be simulated realistically, and the simulated disturbance is large.

Active Publication Date: 2021-06-22
中国人民解放军63926部队 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of the present invention is to design a device that can truly simulate the excavation of the foundation pit for the large disturbance of the existing foundation pit excavation simulation and the inability to truly simulate the excavation process

Method used

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  • Physical model test equipment and method for simulating foundation pit excavation

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[0037] Below in conjunction with accompanying drawing and specific examples, further illustrate the present invention, should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalents of the present invention Modifications in form all fall within the scope defined by the appended claims of this application.

[0038] see figure 1 As shown, the present invention discloses a physical model test equipment for simulating foundation pit excavation. The equipment is mainly divided into the following three parts: external pneumatic equipment, test main body, and external hydraulic equipment, wherein:

[0039] The test body includes model box, model material, inner lining member, air bag, liquid bag:

[0040] Fabricate lining components according to actual working conditions, and fabricate and ...

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Abstract

The invention discloses a physical model test equipment and method for simulating foundation pit excavation. The equipment comprises: a model box, an inner lining member, a liquid bag and an air bag. Model material is buried inside the model box, and the upper surface of the model material has a foundation pit with a size suitable for placing lining components; the lining component is set in a concave shape, and the notch is placed upward in the foundation pit of the model box; The bladder is placed in the inner cavity of the lining member, and there is an air bag between the liquid bag and the inner lining member; the air bag is in a concave structure, and the shape of the outer edge of the air bag is adapted to the shape of the inner cavity of the inner lining member, and the outer surface of the liquid bag The shape of the edge matches the shape of the inner edge of the airbag; when the liquid bag is filled with liquid through the liquid inlet pipe, it can fill the entire concave space of the airbag; when the airbag is filled with gas through the inlet pipe, it can evenly cover the liquid bag and the inner lining components the entire gap between. The device can realize indoor foundation pit excavation simulation and provide a powerful test tool for indoor model tests of geotechnical engineering.

Description

technical field [0001] The invention relates to a physical model test device for simulating foundation pit excavation, belonging to a physical model test device capable of truly simulating structural internal force changes and soil deformation during foundation pit excavation in the field of geotechnical engineering. Background technique [0002] With the rapid development of our country's economy, our country's highways, buildings and water conservancy constructions are also booming. The foundation pit project needs to be paid attention to by all projects, because the instability of the support structure often brings disastrous consequences to the construction. . The construction of the project is inseparable from the indoor test, especially the indoor model test can simulate the stress and deformation during the construction and use of the project by reducing the scale of the components, which is very important for the stability and applicability of the project after it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24E02D33/00
CPCE02D33/00
Inventor 杜广印王坤王磊郭云峰谢任飞武军夏涵覃达
Owner 中国人民解放军63926部队
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