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Subway shield tunnel enlarging station special area and station structure connecting method

A technology of subway shield and shield segment, which is applied in tunnels, tunnel linings, underground chambers, etc., can solve the problems of insufficient efficiency of shield machines, and achieve the effect of reducing deformation and ensuring safety.

Inactive Publication Date: 2008-10-22
BEIJING URBAN CONSTR DESIGN & DEV GRP CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to speed up the construction of subways in major cities in my country, improve project quality, and ensure construction safety, as many subway tunnels as possible should be constructed using the shield method. However, due to the impact of station construction, the efficiency of the shield machine has not been fully utilized.

Method used

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  • Subway shield tunnel enlarging station special area and station structure connecting method
  • Subway shield tunnel enlarging station special area and station structure connecting method

Examples

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Embodiment 1

[0017] Such as figure 1 As shown, this is the connection form of the special shield segment of the column station and the station structure. The column station consists of longitudinal beams and columns to form a structural load-bearing system, which is the station form commonly used in open-cut and underground-cut stations of subways. Its construction steps are as follows:

[0018] 1. The construction of the shield interval passes through the station, and the shield segment within the station adopts the special segment structure of the present invention, that is, the segments are connected clockwise: 1 standard A type a, 1 cut A type b, 1 block Standard A type a, 1 piece B2 type d, 1 piece C type e and 1 piece B1 type c. When expanding to form a station, one standard A-type segment a should be removed, and one cut A-type segment b should be cut to form an opening leading to the station platform. The dotted line in the figure indicates the removed segment. In order to facili...

Embodiment 2

[0023] Example 2: The connection form between the special shield segment of the tower station and the station structure is as follows figure 2 shown. The tower-pillar station does not have longitudinal beams and columns, and the station has cross passages at intervals to connect the platform side and the platform as a passage for passengers to get on and off the train. This type of station can be used for both open-cut and underground-cut stations.

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Abstract

The invention provides a connecting method for connecting special duct pieces and a station structure in a subway shied tunnel extended station. The connecting method solves key problems that a station is built in subway regional shield extended construction process from aspects such as the constitution of the duct pieces, the assembly mode of the duct pieces, the connecting joint between the duct pieces and the station structure, etc. Through strengthening reinforcing bars, greater internal force born by the shield tunnel duct pieces in the process that the station is built by extension is satisfied, thereby guaranteeing the safety of the duct pieces; and after local duct pieces are removed, steel plates and steel reinforcement connectors are pre-embedded through straight-joint assembly and connected conveniently with the station structure, so that the connecting joint has enough rigidity to transfer axial force, bending moment and shearing force, the distortion of the joint is reduced, waterproofing processing to the joint can be effectively carried out, and the connection problem that the high-rigidity main structure of the station is connected with the high-flexibility structure of the duct pieces is solved. The shape of the special shield duct pieces are consistent with the shape of common subway regional tunnel shield duct pieces, so the same mould which is either applied to the special shield duct pieces or the common subway regional tunnel shield duct pieces can be used for production.

Description

technical field [0001] The invention relates to the technical field of underground construction engineering, in particular to a method for connecting a special segment and a station structure in a subway shield tunnel extension station. Background technique [0002] In order to speed up the construction of subways in major cities in my country, improve project quality, and ensure construction safety, shield tunneling should be used as much as possible in subway tunnels. However, due to the impact of station construction, the efficiency of shield machines has not been fully utilized. For this reason, the construction scheme of expanding the station on the basis of shield tunneling in the interval is introduced, which can well solve the contradiction between station construction and shield construction in the interval. During the construction of the expanded station, it is necessary to remove some segments of the shield tunnel in the interval and connect the remaining segments...

Claims

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Application Information

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IPC IPC(8): E21D9/14E21D11/04
Inventor 李晓霖刘维宁魏怡郭婷罗富荣李兆平乐贵平贺少辉惠丽萍朱胜利袁大军张彦孙长军路美丽张良焊张成满张新金郭德友徐凌李海锋陈东许世伟曹宗豪范欢盛杰王占奎孙斌彭彦彬万世春
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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