Tunnel model test platform with complex loading-unloading work condition considered

A technology of tunnel model and test platform, which is applied in soil material testing, material inspection products, etc., can solve the problems of difficult test execution and limited loading capacity.

Active Publication Date: 2020-02-04
TONGJI UNIV
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  • Application Information

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Problems solved by technology

Most of the existing model test systems can only carry out simple loading conditions, and most of the loading is realiz

Method used

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  • Tunnel model test platform with complex loading-unloading work condition considered
  • Tunnel model test platform with complex loading-unloading work condition considered
  • Tunnel model test platform with complex loading-unloading work condition considered

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Embodiment

[0045] Such as Figure 1-4 As shown, the present invention proposes a tunnel model test platform that can consider complex loading and unloading conditions, and is used for the simulation of complex working conditions in close-to-operation tunnel construction. The platform includes a self-balancing frame subsystem, a model test box system, a loading control Subsystem, automatic monitoring subsystem.

[0046] The loading subsystem adopts a modular design and relies on the self-balancing frame subsystem. The loading subsystem includes nine independent loading and unloading jacks arranged in a nine-square grid on the plane. Different loading and unloading combinations can be realized through the loading plate on the top of the jack. It can complete the simulation of complex construction conditions close to the operating tunnel, including the overall (partial) excavation (loading) of the tunnel top and the overall (local) excavation (loading) of the side.

[0047] The balanced fr...

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Abstract

The invention relates to a tunnel model test platform with a complex loading-unloading work condition considered. The platform includes a self-balancing frame sub-system, a model test box sub-system,a loading control sub-system, and an automatic monitoring sub-system, wherein the self-balancing frame sub-system comprises a left main frame and a right main frame forming a balancing frame structure; the model test box sub-system includes a model box bottom plate having a universal wheel and a model box main body; a rock-soil body and a tunnel model are disposed in the model box main body; the loading control sub-system includes a jack module installed on a lower surface of an upper counter-force platform and used for implementing a loading-unloading combination under multiple work conditions via servo control; the jack module includes multiple jacks arranged orthogonally, and a loading steel plate disposed on heads of the jacks; and the automatic monitoring sub-system includes a monitoring device and a collector. Compared with the prior art, the tunnel model test platform provided by the invention has the advantages of modular design, diverse loading-unloading combination, capability of simulating multiple complex work conditions, etc.

Description

technical field [0001] The invention relates to the technical field of civil engineering tests, in particular to a tunnel model test platform considering complex loading and unloading conditions. Background technique [0002] With the development of the city, there are more and more cases of close operation of rail transit and municipal tunnel construction, including excavation and unloading of foundation pits, large-area piled soil loading of ground landscape, and pile foundation construction. Due to the non-repeatability of engineering cases, model tests must be used to further grasp the mechanism of proximity construction disturbance. Most of the existing model test systems can only carry out simple loading conditions, and the loading is mostly realized by the upper part of the load, which is not only difficult to execute the test, but also has limited loading capacity. Contents of the invention [0003] The object of the present invention is to provide a tunnel model ...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 谢东武丁文其张清照赵程乔亚飞
Owner TONGJI UNIV
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