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Segment joint mechanical property test system and method considering shearing dislocation

A segment joint and test system technology, which is applied in the field of mechanical performance test system of segment joint considering shear displacement, can solve the problem that the segment shear displacement cannot be realized and the mechanical performance leakage of tunnel lining segment joint cannot be studied Water changes and other issues

Pending Publication Date: 2021-12-07
HUANENG YARLUNG TSANGPO RIVER HYDROPOWER DEV INVESTMENT CO LTD +2
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors found that the existing segment joint performance test system adopts the form of symmetrical loading of two model segments. Since the shear displacement between segments cannot be realized, it is impossible to study the mechanics of tunnel lining segment joints under different staggered opening environments. Variation law of performance and leakage water

Method used

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  • Segment joint mechanical property test system and method considering shearing dislocation
  • Segment joint mechanical property test system and method considering shearing dislocation
  • Segment joint mechanical property test system and method considering shearing dislocation

Examples

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Embodiment 1

[0044] Such as figure 1 As shown, this embodiment provides a mechanical performance test system for segment joints considering shear displacement, including a frame system, a segment support system, a segment loading system, and a data acquisition system;

[0045] The segment loading system includes a vertical loading subsystem and a lateral loading subsystem. The vertical loading subsystem is arranged on the top of the frame system, which includes a vertical loading cylinder 5, a load distribution beam 7 and two telescopic cylinders 8. The vertical loading cylinder 5 is arranged on the upper part of the load distribution beam 7, and two telescopic oil cylinders 8 are detachably connected to the lower part of the load distribution beam 7, and are arranged symmetrically; the lateral loading subsystem includes a lateral loading device and a vertical sliding device, which are respectively arranged on both sides of the frame system, The lateral loading device comprises a lateral l...

Embodiment 2

[0060] This embodiment provides a test method for a test system for the mechanical properties of segment joints considering shear displacement, which is characterized in that it includes the following steps:

[0061] 1) Connect the pre-prepared two rectangular model segments together via bolts, and then place them on two L-shaped support plates 9;

[0062] 2) Then jack up the support cylinder 15 below the rectangular model segment near the side of the lateral loading device, so that the two rectangular model segments are in a horizontal state;

[0063] 3) Open the lateral loading cylinder 17 for preloading, and push the L-shaped support plates 9 on both sides to fully contact the rectangular model segments;

[0064] 4) Remove the support cylinder 15 below the model segment;

[0065] 5) Remove the telescopic oil cylinder on the right side of the load distribution beam, keep the telescopic oil cylinder on the left side, start the vertical loading oil cylinder 5, apply pressure ...

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Abstract

The invention belongs to the field of test equipment, and discloses a segment joint mechanical property test system and method considering shear dislocation. The system comprises a frame system, a segment support system, a segment loading system, a water seepage amount measurement system, and a data acquisition system. The segment loading system comprises a vertical loading subsystem and a transverse loading subsystem, and comprises a vertical loading oil cylinder, a load distribution beam and two telescopic oil cylinders; the transverse loading subsystem comprises a transverse loading device and a vertical sliding device; the segment support system comprises two L-shaped support plates which are respectively hinged with the transverse loading device and the vertical sliding device, a space for placing two rectangular model segments is arranged between the two L-shaped support plates, and a movable support oil cylinder is arranged below the rectangular model segment close to one side of the transverse loading device. According to the invention, the influence of shearing dislocation is considered, and the mechanical property of the tunnel lining segment joint and the change rule of water leakage in different staggered platform opening environments can be researched.

Description

technical field [0001] The invention belongs to the field of testing equipment, and in particular relates to a mechanical performance testing system and method of segment joints considering shear displacement. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The shield tunnel uses prefabricated segments to splice the lining. The prefabricated segments are the main force bearing body of the shield tunnel. The force has a great influence, but the prototype test of shield tunnel segment loading is large in size, expensive, and difficult to carry out the test. Therefore, a model segment with a certain scale (such as a rectangular concrete block) is usually used for simulation tests to restore the stress and deformation of the segment and bolts in the shield tunnel under load to the maximum extent, so as to study the tunnel lining segment. Joint mechan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025G01N2203/0048
Inventor 张庆松李鸿钊刘人太刘衍凯张军杰陈新严冬李超毅封伯昊杨传根张华胜潘旭东
Owner HUANENG YARLUNG TSANGPO RIVER HYDROPOWER DEV INVESTMENT CO LTD
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