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Existing subway station main structure broadening construction method

A main structure, existing subway technology, applied in the direction of basic structure engineering, underwater structures, buildings, etc., to achieve the effect of convenient realization, prevention of groundwater gushing, and simple precipitation method

Active Publication Date: 2013-12-25
CHINA RAILWAY FIRST GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a construction method for the expansion of the main structure of the existing subway station, which has simple steps, reasonable design, convenient implementation, low investment cost, and fast construction progress. The construction effect is good, which effectively solves the difficult problem of opening holes on the existing bottom plate with restored water pressure in the expansion construction of the subway station

Method used

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  • Existing subway station main structure broadening construction method
  • Existing subway station main structure broadening construction method
  • Existing subway station main structure broadening construction method

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Embodiment Construction

[0069] Such as figure 1 A construction method for the expansion of the main structure of an existing subway station is shown. The main structure of the expanded subway station includes a base plate 1, a left wall 4-1 and a right wall 4-2 arranged on the left and right sides of the base plate 1. , The top plate 2 located directly above the bottom plate 1 and the middle plate 3 arranged between the top plate 2 and the bottom plate 1, the number of the middle plate 3 is one or more, and the plurality of middle plates 3 are arranged from top to bottom Between the top plate 2 and the bottom plate 1, the left and right sides of the bottom plate 1, the top plate 2 and the middle plate 3 are connected to the left side wall one 4-1 and the right side wall one 4-2 as a whole; Between the upper middle plate 3, between the top plate 2 and the middle plate 3 located below it, and between the two adjacent middle plates 3 up and down are all supported by uprights 5, see figure 2 , The method ...

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Abstract

The invention discloses an existing subway station main structure broadening construction method. The existing subway station main structure broadening construction method comprises the following steps that firstly, bottom board trepanning dewatering construction comprises the processes that 101, dewatering well pipes are installed; 102, dewatering is conducted, and dewatering construction is conducted through the dewatering well pipes until underground water below a bottom board is reduced to the designed depth; secondly, station main structure broadening construction is conducted, and broadening construction conducted on an broadening subway station main structure comprises the processes that 201, new underground continuous wall construction is conducted; 202, broadening construction comprises the steps of broadening section division, first-period broadening-section broadening construction and second-period broadening-section broadening construction; 203, new side wall construction is conducted. The existing subway station main structure broadening construction method is simple in step, reasonable in design, convenient to achieve, low in investment cost, rapid in construction speed and good in construction effect, and effectively solves the problem that in subway station broadening construction, trepanning and dewatering are conducted on the existing bottom board with recovered water pressure difficultly.

Description

Technical field [0001] The invention belongs to the technical field of main structure expansion of subway stations, and in particular relates to a construction method for main structure expansion of existing subway stations. Background technique [0002] When constructing deep foundation pits of subway stations, the construction method of underground continuous walls is usually adopted. In the process of new subway construction, it is usually necessary to expand existing subway lines. For example, when it is necessary to expand one station to one section of an existing subway line, due to the adjustment of the section line, it is objectively required to carry out the structure of the existing subway station. Lengthen, widen and expand to meet the needs of structural boundaries. Since the existing subway station has been put into use for a certain period of time, the groundwater has been fully replenished, the water pressure below the station floor has been restored, and the main...

Claims

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Application Information

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IPC IPC(8): E02D29/045E02D19/10E04G23/02
Inventor 李斌李军张臻王成发张子洋卢永海易敏杨晓猛李鑫刘延生未广辉徐凯何勋董明明常开帮龙福江崔广振李杰仝庚蒋四军许雄伟严佑军徐刚宋卫峰周立娜张元龙
Owner CHINA RAILWAY FIRST GRP CO LTD
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