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Self-resetting pressure bearing and shock reducing water stop part and tunnel flexible connector

A flexible joint and self-resetting technology, applied in tunnels, tunnel linings, shaft equipment, etc., can solve problems such as large permanent deformation, difficult repairs, complex structures, etc., and achieve the effects of reducing damage and improving earthquake safety

Active Publication Date: 2017-10-17
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The defects of traditional tunnel flexible joints are: complex structure, separation of water-stop function and tensile function, and lack of ability to dissipate earthquake energy. After the earthquake, there will be large permanent deformation, making repair difficult

Method used

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  • Self-resetting pressure bearing and shock reducing water stop part and tunnel flexible connector
  • Self-resetting pressure bearing and shock reducing water stop part and tunnel flexible connector
  • Self-resetting pressure bearing and shock reducing water stop part and tunnel flexible connector

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Embodiment 1

[0033] Embodiment 1 discloses a self-resetting, pressure-bearing, shock-absorbing, and water-stopping member, which is used to connect tunnel segments of flexible joints in tunnels. For example, traditional tunnel segments (such as figure 2 The original longitudinal connecting bolts on the first tunnel segment 71 and the second tunnel segment 72) are canceled or partially canceled, and the self-resetting pressure-bearing shock-absorbing water-stop is installed to achieve the purpose of improving the flexible joint of the tunnel.

[0034] see Figure 1 to Figure 3 , the self-resetting pressure-absorbing, shock-absorbing and water-stopping member includes: a first water-stopping rubber layer 10 and a second water-stopping rubber layer 20 arranged oppositely, arranged between the first water-stopping rubber layer 10 and the second water-stopping rubber layer 20, the shape memory alloy plate 30, the first thickened clamping steel plate 41, the second thickened clamping steel pla...

Embodiment 2

[0043] see also Figure 1 to Figure 3 , a tunnel flexible joint disclosed in Embodiment 2, including a first tunnel segment 71, a second tunnel segment 72, a first high-strength bolt 61, a second high-strength bolt 62, and any one of the self-resetting bearings in Embodiment 1 Pressure-reducing, shock-absorbing and water-stopping parts. The first high-strength bolt 61 fixedly connects and compresses the self-resetting pressure-bearing, shock-absorbing, water-stopping member to the inner side of the first tunnel segment 71 through the first bolt hole 51, and the second high-strength bolt 62 connects the self-resetting bearing through the second bolt hole 52. The pressure-absorbing, shock-absorbing and water-stopping member is fixedly connected to and pressed against the inner side of the second tunnel segment 72 .

[0044] In a further preferred solution, the tensile stiffness of the shape memory alloy plate 30 is smaller than the stiffness of the longitudinal bolts of common ...

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Abstract

The invention relates to a self-resetting pressure bearing and shock reducing water stop part and a tunnel flexible connector. The self-resetting pressure bearing and shock reducing water stop part comprises a first water-stop rubber layer, a second water-stop rubber layer, a shape memory alloy plate, a first thickened clamping steel plate, a second thickened clamping steel plate, a third thickened clamping steel plate and a fourth thickened clamping steel plate, wherein the first water-stop rubber layer and the second water-stop rubber layer are oppositely arranged, and the shape memory alloy plate is arranged between the first water-stop rubber layer and the second water-stop rubber layer. The self-resetting pressure bearing and shock reducing water stop part can achieve three functions of deformation resetting under loads, flexible energy dissipation and shock reduction and normal water pressure bearing for sealing and water stopping, damage to a tunnel main body structure by an earthquake can be reduced when the earthquake happens, and the seismic safety of a tunnel structure is improved.

Description

technical field [0001] The invention relates to the field of tunnel engineering and underground space engineering, in particular to a self-resetting, pressure-bearing, shock-absorbing, and water-stopping piece that can be used in engineering structures such as shield tunnels in high-intensity areas, immersed tube tunnels, comprehensive pipe galleries, and subway underground stations. At the same time, it relates to a tunnel flexible joint using the self-resetting pressure-bearing, shock-absorbing and water-stopping piece. Background technique [0002] Under earthquake action, usually due to changes in soil layers, changes in structural types and materials, and differences in boundary conditions, stress concentration or displacement amplification occurs in some areas. These areas must use other means to improve joints. Anti-seismic performance. In the earthquake resistance of tunnels, the areas that need to be paid attention to are classified as follows: the connection betwe...

Claims

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Application Information

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IPC IPC(8): E21D11/38E21D11/08
CPCE21D11/083E21D11/38Y02E10/20
Inventor 张颖徐丽罗俊杰陈华霆王子琦谭平周福霖习智强
Owner GUANGZHOU UNIVERSITY
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