Pipe segment joint type shield tunnel structure

A technology for shield tunneling and segment joints, which is applied in tunnels, tunnel linings, shaft linings, etc. It can solve the problems of gasket staggered seam and opening, affecting waterproof effect, and reducing mechanical performance, so as to facilitate replacement and avoid Partial waterproof seal failure, the effect of improving waterproof performance

Pending Publication Date: 2018-12-18
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure increases the overall stability of the tunnel through bolt connections, but because the segments need to reserve bolt holes and installation hand holes, the mechanical performance is reduced, and it is also easy to form leakage water channels
The elastic gasket and water-swellable rubber used in the waterproof structure are easy to age and have poor durability. The gasket is glued to the surface of the segment with glue and is easy to fall off. In addition, assembly errors, segment misalignment and opening will directly lead to sealing The staggered seams and opening of the pad will affect the waterproof effect

Method used

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  • Pipe segment joint type shield tunnel structure
  • Pipe segment joint type shield tunnel structure
  • Pipe segment joint type shield tunnel structure

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0028] like Figure 1-4 As shown, the segment joint type shield tunnel structure of the present invention is assembled from multiple sets of segment bodies 1, and the two ends and both sides of the segment body 1 are respectively processed with stepped mortise and tenon joints arranged symmetrically. Structure, on the entire step section of the stepped mortise and tenon structure, a plurality of anchoring steel bars 9 are laid with embedded steel plates 6; the ends of every two adjacent segment bodies 1 are passed through mutually matched stepped mortise and tenon joints The structure is overlapped together, and a steel plate putty waterstop 7 is provided between the overlapping contact surfaces of the ends of every two adjacent segment bodies, and the end overlapping surfaces of every two adjacent segment bodies The bottom is provided with an anchor structu...

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Abstract

The invention discloses a pipe segment joint type shield tunnel structure which comprises a pipe segment body. The structure is characterized in that a half of side flanges of the pipe segment body are concaved, the other half of the side flanges of the pipe segment body protrude, the adjacent pipe segment bodies are supported mutually through bump interlocking; the pipe segment body is provided with pre-buried right-angle bolts, and the right-angle bolts are connected through a bolt sleeve; a pre-buried steel plate is arranged at the side flange of the pipe segment body. The waterproof structure is composed of a steel plate putty water stop at the pipe segment side flange joint and a GB/SR water stop at the inner side of the pipe segment circumference of the circular seam. The joint is simple in type, construction is convenient, no bolt hand hole is formed, the waterproof effect is good, pipe segment staggering can be reduced, and the splicing quality can be improved.

Description

technical field [0001] The invention relates to a segment joint type shield tunnel structure, which relates to the fields of subway, railway, highway, municipal, hydropower pipeline construction and the like, and is suitable for the design of segment joints and waterproof structures of shield tunnels. Background technique [0002] In recent years, shield tunnels have been widely used in urban subways, cross-river and sea tunnels and other fields. The shield tunnel segment lining structure is a tunnel body formed by splicing the segments into a ring through the segment joints, and then connecting the single segment rings into a tubular structure through the inter-ring joints. The lining structure is the main support of the shield tunnel, and the lining ring is taken as a whole, and the segment joint is its weak link. [0003] At present, the structural joints of shield tunnel segments are mostly connected by built-in bolts, and elastic gaskets and water-swellable rubber stri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21D11/38
CPCE21D11/083E21D11/383E21D11/385
Inventor 周建军吕乾乾孙振川张兵陈瑞祥
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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