A Passive Vectoring Flexible Joint Structure for Segmental Lining of Cross-fault Tunnel

A technology of flexible joints and tunnel joints, applied in tunnel lining, tunnel, wellbore lining, etc., can solve the problems of reduced bearing reliability, insufficient deformation capacity, unreliable waterproof measures, etc., to prevent structural relaxation damage and reduce damage. Effect

Active Publication Date: 2022-06-21
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the location of lining joints often has problems such as unreliable waterproof measures and insufficient deformation capacity.
However, increasing the joint width to enhance the deformation capacity of the flexible joint significantly reduces the bearing reliability near the lining joint.

Method used

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  • A Passive Vectoring Flexible Joint Structure for Segmental Lining of Cross-fault Tunnel
  • A Passive Vectoring Flexible Joint Structure for Segmental Lining of Cross-fault Tunnel
  • A Passive Vectoring Flexible Joint Structure for Segmental Lining of Cross-fault Tunnel

Examples

Experimental program
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Effect test

Embodiment 1

[0032] like Figures 1 to 5 As shown, the passive vector flexible joint structure of the segmental lining of the cross-fault tunnel in this embodiment is suitable for the segmental secondary lining of the cross-fault tunnel. In the cross-fault tunnel, an initial support 1 , a waterproof board 2 and a secondary lining 3 are sequentially arranged along the tunnel section from outside to inside. In this embodiment, the flexible joint structure 4 is arranged between the segmental secondary linings 3 to play a connecting role.

[0033] The flexible joint structure 4 of the present embodiment includes a joint bridge mechanism 41 , a bridge plate joint gusset 42 , a bridge plate joint rubber 43 , a waterproof plate protective layer 44 , a drag reduction layer 45 and a foam concrete shock-absorbing filling layer 46 . Among them, a plurality of joint bridging mechanisms 41 are provided, and the plurality of joint bridging mechanisms 41 are arranged in the circumferential direction of ...

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Abstract

The present invention relates to the field of tunnel engineering, and provides a segmental lining passive vector type flexible joint structure for cross-fault tunnels, including a joint bridging mechanism, a bridging plate seam buckle plate, a bridging plate seam rubber, a waterproof plate protection layer, and a drag reducing layer and a foam concrete shock-absorbing filling layer; wherein, there are multiple joint bridging mechanisms, and multiple joint bridging mechanisms are arranged circumferentially along the fault-crossing tunnel, and adjacent joint bridging mechanisms pass through the bridging plate seam The pinch plate is connected with the seam rubber of the bridging plate; at the same time, the waterproof plate protection layer and the drag reducing layer are also arranged between the outside of the joint bridging mechanism and the waterproof plate on the inner side of the initial support of the tunnel, and the joint bridging mechanism The foam concrete shock-absorbing filling layer is arranged in the joint with the secondary lining of the tunnel. The invention has the advantages of not only good waterproof and deformation ability, but also meeting the load bearing requirements of the surrounding rock near the lining joints.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a passive vector flexible joint structure lining a cross-fault tunnel segment. Background technique [0002] In recent years, as my country's transportation infrastructure has entered a stage of comprehensive development, more and more traffic tunnels pass through fault-crossing areas, such as the Shigangba Water Diversion Tunnel, the Duwen Highway Jijiaya Tunnel, the Duwen Expressway Longdongzi Tunnel, and the Zipingpu Tunnel. Tunnels, etc., are located in high-intensity seismic areas and pass through fault fracture zones. Due to the obvious sudden change of surrounding rock stiffness in cross-fault tunnels, damages such as tunnel shear dislocation caused by strong earthquakes and fault dislocations are also frequent phenomena. According to relevant literature statistics, the maximum vertical dislocation of the tunnel structure through the fault zone can reach 4.0m after the di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/10E21D11/38
CPCE21D11/003E21D11/105E21D11/38
Inventor 申玉生周鹏发王耀达张熙高登黄海峰邱居涛曾志华铁明亮雷龙陈孔福王彬光甘雨航闵鹏张逸飞朱正超易鹏豪苟安迪赵何霖朱鹏霖
Owner SOUTHWEST JIAOTONG UNIV
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