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Synchronous construction method for shield method tunnel

A technology of simultaneous construction and shield method, applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problems of small transportation volume, increased construction period, single transportation route, etc., and achieve the effect of achieving high speed and shortening construction period.

Inactive Publication Date: 2009-01-07
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the length of the tunnel increases, not only the transportation route is single but also the transportation volume is small, and the construction period is also doubled

Method used

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  • Synchronous construction method for shield method tunnel
  • Synchronous construction method for shield method tunnel
  • Synchronous construction method for shield method tunnel

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Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Such as Figure 1-5 As shown, the method of this embodiment adopts the following steps:

[0021] Firstly, prefabricated square-shaped prefabricated components 3, the length of each section of square-shaped prefabricated components 3 is equal to the segment ring width of the tunnel lining ring 1, and according to the requirements of the curve radius of the line, it is set into standard blocks and wedge-shaped blocks.

[0022] Then inside the lining ring 1, along with the advancement of the shield tunneling, a square-shaped prefabricated component 3 is placed sequentially at a certain distance behind the shield tail. 4 connections. The height of the tongue and groove is taken as the thickness of the cast-in-place slab 4, and the width is ≥150mm, and a steel connector is reserved to ensure that the top plate 5 of the prefabricated component 3 and the cast-in-place slab 4 form a continuous slab with stable stress.

[0023] The joints of the square-shaped prefabricated com...

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Abstract

The present invention relates to the railway traffic and tunnel, in particular to a synchronous construction method used for a shield tunnel. The method has the steps as follows: firstly, square prefabricated components are prefabricated; secondly, the square prefabricated components are arranged orderly at the position with certain distance behind a shield tail in a lining ring along with the pushing of a tunnel shield. The synchronous construction method has the advantages that under the precondition that the tunnel shield pushing speed is not influenced, the construction of the tunnel internal structure is processed at the same time; the square prefabricated components are used for realizing the synchronous construction in the tunnel, thereby not only reducing the cast-in-situ reinforced concrete block in the tunnel, but also shortening the construction time of the tunnel and realizing the high speed of pushing the tunnel shield.

Description

technical field [0001] The invention relates to rail transit and tunnels, in particular to a synchronous construction method for shield tunnels. Background technique [0002] The general practice of shield tunneling is to construct the inner structure of the tunnel after the tunnel lining is excavated. However, as the length of the tunnel increases, not only the transportation route is single but also the transportation volume is small, and the construction period is also doubled. Contents of the invention [0003] The object of the present invention is to provide a synchronous construction method for shield tunnels according to the deficiencies of the above-mentioned prior art. The “mouth”-shaped prefabricated components are placed in sequence at a certain distance behind the shield tail, so that the “mouth”-shaped components are not only a channel for transporting segments and construction materials, but also a part of the cast-in-place slab for the subsequent internal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/04
Inventor 申伟强杨志豪曹文宏陈正杰乔宗昭狄永媚许熠
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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