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Connecting method used between lining segment and inner lining of shield tunnel

A technology of lining segment and connection method, applied in the field of tunnels, can solve the problems of large volume consumption and increased engineering cost, and achieve the effects of increasing tensile and shear resistance, reducing structural thickness and considerable economic benefits.

Active Publication Date: 2010-05-19
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above case, only pressure and partial shear force can be transmitted between the inner and outer layers, so lining segments and inner linings with relatively large thickness are required, and the volume of components with large thickness is large. With the increase of tunnel length, Will directly lead to a significant increase in engineering costs

Method used

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  • Connecting method used between lining segment and inner lining of shield tunnel
  • Connecting method used between lining segment and inner lining of shield tunnel
  • Connecting method used between lining segment and inner lining of shield tunnel

Examples

Experimental program
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Embodiment

[0016] Embodiment: The steps involved in this embodiment for the connection method between the lining segment and the inner lining in the shield tunnel are as follows: firstly, the lining segment 1 is prefabricated, and the reinforcement cage of the lining segment 1 is On the inner side of the inner arc surface, the cold-bendable anchor bar 4 is pre-embedded; secondly, the lining segment 1 is assembled; after the outer lining segment 1 is assembled, one end 5 of the pre-embedded anchor bar 4 is chiseled out , cold-bending to the design position, if necessary, the inner arc surface of the outer lining segment 1 can be chiseled at the same time; finally, the integral pouring construction of the inner lining 3 is carried out, and the chiseled end 5 of the anchor bar 4 is embedded in the inner layer Lining 3 in. The inner lining 3 is connected and fixed as a whole with the inner arc surface of the lining segment 1 through integral pouring.

[0017] The setting of the anchor bars ...

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Abstract

The invention relates to a connecting structure between liner tube and inner liner in shield tunnel, wherein the combine face between the liner tube and the inner liner is disposed with an anchor baris disposed to combine them effectively, the combine face can transmit pressure, shear force and torque, to force the layered elements together and reduce structural thickness. The invention can improve the shear and drawing resistances on the combine face, to integral the inner and outer liners, while the invention can reduce structural thickness and improve benefits.

Description

technical field [0001] The invention relates to tunnels, in particular to a connection method for lining segments and inner linings in shield tunnels. Background technique [0002] Shield method tunnels have been widely used in large-depth underground projects. With the application of shield method in urban large-scale sewer pipelines and pressure water tunnels, the stress conditions of lining structures are becoming more and more complicated. Pressure, but also to withstand the internal water pressure. The single-layer prefabricated lining can no longer meet the structural force requirements, and the cast-in-place secondary integral lining must be used together as the load-bearing structure. In the shield tunneling project under internal pressure, in order to meet the technological requirements, correct construction errors and the needs of structural stress, it is generally necessary to adopt a double-layer lining structure. The joint surface of the outer lining and the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/04
Inventor 沈秀芳曹文宏杨志豪陈正杰乔宗昭狄永媚许熠
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE