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Shield tunnel composite waterproof structure

A waterproof structure, shield tunnel technology, applied in tunnels, tunnel linings, shaft linings, etc., can solve the problems of reduced waterproof performance of gaskets, no waterproof structure, easy sliding of gaskets, etc., to extend the water seepage flow path, prevent The effect of leakage, good water resistance and durability

Active Publication Date: 2019-08-23
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Chinese invention patent with the application number 201711035139.X discloses a shield tunnel segment gasket. An engaging structure matching the segment sealing groove is provided at the bottom of the gasket body. There is no waterproof structure at the bottom of the gasket body. When water seeps into the bottom of the gasket body from both sides, it is easy to seep water from the bottom, resulting in a decrease in the waterproof performance of the overall gasket. This is the problem of "fixed and not waterproof"
The Chinese invention patent with the application number 201811108659.3 discloses a new type of composite waterproof gasket for shield tunnels. The gasket of this invention is easy to slide and squeeze out during the assembly process of shield tunnel segments, and the water has penetrated from both sides. To the bottom of the gasket groove, the rubber at the bottom is water-swellable and then waterproof. Under the action of long-term water penetration, the expansion of the bottom water-swellable rubber has a negative effect on the fixing of the gasket body on the bottom of the gasket groove. This is "waterproof" not fixed" problem

Method used

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  • Shield tunnel composite waterproof structure
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  • Shield tunnel composite waterproof structure

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as Figures 1 to 3 As shown, a composite waterproof structure of a shield tunnel, including a waterproof gasket and a shield segment gasket groove 3, the waterproof gasket includes a gasket body 1, and the gasket body 1 is a left-right symmetrical structure, which is evenly stressed and sealed. The main body of the gasket 1 is set in the groove 3 of the shield segment gasket. There is a first groove 4 on each side of the left and right sides of the gasket body 1, and the two first grooves 4 are arranged symmetrically. The shield segment is sealed The gasket groove 3 is provided with a protrusion 9 corresponding to the first groove 4, and the top of the gasket main body 1 is provided with a second groove 5, and the gasket auxiliary body 2 is arranged in the second groove 5, and the gasket auxiliary The body 2 can adopt the existing technology. The top of the gasket auxiliary body 2 is provided with a fourth groove 7, and the water-swellable rubber 8 is embedded in t...

Embodiment 2

[0030] Such as Figure 4 with 5As shown, a composite waterproof structure of a shield tunnel, including a waterproof gasket and a shield segment gasket groove 3, the waterproof gasket includes a gasket body 1, and the gasket body 1 is a left-right symmetrical structure, which is evenly stressed and sealed. The main body of the gasket 1 is set in the groove 3 of the shield segment gasket. There is a first groove 4 on each side of the left and right sides of the gasket body 1, and the two first grooves 4 are arranged symmetrically. The shield segment is sealed The gasket groove 3 is provided with a protrusion 9 corresponding to the first groove 4, and the top of the gasket main body 1 is provided with two second grooves 5, and the two second grooves 5 are arranged symmetrically, and each second groove 5 are respectively provided with sealing gasket auxiliary body 2, two sealing gasket auxiliary bodies 2, which greatly improve the waterproof performance of the middle part, the s...

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Abstract

The invention discloses a shield tunnel composite waterproof structure, and belongs to the technical field of tunnel engineering. The shield tunnel composite waterproof structure comprises a waterproof seal pad and a shield pipe piece seal pad groove, the waterproof seal pad comprises a seal pad body, the seal pad body is arranged in the shield pipe piece seal pad groove, the left side and the right side of the seal pad body are each provided with at least one first grove, the shield pipe piece seal pad groove is provided with a protrusion corresponding to the first groove, at least one secondgroove is formed in the top of the seal pad body, and a seal pad auxiliary body is arranged in the second groove. The shield tunnel composite waterproof structure is sliding-resistant, extrusion-resistant and comprehensive in waterproofness and has the long-term waterproof capacity, water is prevented from leaking to the bottom of the seal pad, the waterproof stability is effectively improved, and long-term waterproofness and durability of the pipe piece joint can be improved.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a composite waterproof structure of a shield tunnel. Background technique [0002] With the development of the economy, there are more and more subways in major cities. The shield tunneling method is the main construction technology of the subway, and has become an important technology in the construction of infrastructure such as urban development and transportation in my country. Due to the multi-slit characteristics of the shield tunnel, water leakage at the joints of the segments affects the safety of the underground. However, when the interaction between the adjacent segments of the existing shield tunnel segment waterproof gaskets is insufficient, the gap between the waterproof gaskets There will be small gaps between them, causing water leakage in the structure; or under the action of earthquake load, the structural deformation of the segments will cause the ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/08
CPCE21D11/083E21D11/385E21D11/386
Inventor 沙成满姚克勤印兆麟张泽陈玉娥高松
Owner NORTHEASTERN UNIV
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