Shield tunnel segment lining anti-seismic longitudinal joint

A technology of shield tunnel segment and longitudinal joint, which is applied in tunnel lining, tunnel, wellbore lining and other directions, can solve the problem that the seismic capacity needs to be improved, and achieve the effect of easy promotion and easy implementation.

Inactive Publication Date: 2010-11-24
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from this that in shield tunnels in urban subway intervals in high-intensity earthquake areas, the longitudinal joints and the annular jo

Method used

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  • Shield tunnel segment lining anti-seismic longitudinal joint
  • Shield tunnel segment lining anti-seismic longitudinal joint
  • Shield tunnel segment lining anti-seismic longitudinal joint

Examples

Experimental program
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Embodiment

[0034] figure 1 , 2 As shown, a specific embodiment of the present invention is: a shield tunnel segment lining anti-seismic longitudinal joint, including a screw 1, a nut 2 at both ends of the screw 1, a washer 3 and a water-swellable rubber 6 on the inner side of the nut 2 in sequence . An elastic device 4 is fitted on the screw 1 between the washer 3 and the nut 2 . An outer gasket 3' is sleeved between the water-swellable rubber 6 and the elastic device 4. The elastic device 4 is a spring.

[0035] figure 2 It is shown that the screw rod 1 of this example is inserted into the longitudinal (axial) perforation 10 between the hand holes 9 of two adjacent segment rings 8, the ends of the screw rod 1 at the hand holes 9 of the two segment rings 8 The water-swellable rubber 6, the washer 3, the elastic device 4 and the outer washer 3' are sequentially inserted from the inside to the outside, and then the nut 2 is tightened to realize the splicing of the segment rings 8.

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Abstract

The invention relates to a shield tunnel segment lining anti-seismic longitudinal joint which comprises a screw rod (1) and nuts (2) on both ends of the screw rod (1), wherein the inner side of each nut (2) is orderly provided with a washer (3) and a water swelling rubber (6); and an elastic device (4) is sheathed on the screw rod (1) between each nut (2) and the gasket (3). The longitudinal joint can reduce the longitudinal equivalent tensile strength of a lining structure, enhance the deformability of a circumferential seam, reduce the longitudinal tensile force generated during the earthquake and enhance the anti-seismic capability of a shield tunnel. The longitudinal joint is especially suitable for shield tunnels among subway regions in high-intensity seismic areas, does not need to change the prior tunnel structure, and has the advantages of convenient implementation and easy popularization.

Description

technical field [0001] The invention relates to the joint of segment lining of shield tunnel. Background technique [0002] At present, shield tunnels mainly use multiple arc-shaped single-layer reinforced concrete segments to be spliced ​​into segment rings through joints, and then the segment rings are spliced ​​through joints to grow pipelines. Because the tunnel adopts this assembly method, the safety, stability and shock resistance of the tunnel depend to a large extent on the connection stability and shock resistance of the joints between segments and segment rings. [0003] The joints between existing segments and segment rings and segment rings are all bolt joints. There are grooves on the outer surface of the segments to form hand holes, and the circumferential holes are perforated between the hand holes of two adjacent segments. The connection between the pieces is spliced ​​into a segment ring; this kind of joint that forms a tube to form a segment ring is a tra...

Claims

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Application Information

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IPC IPC(8): E21D11/08E21D11/38
Inventor 何川方勇王士民汪波周济民高云龙郭瑞
Owner SOUTHWEST JIAOTONG UNIV
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