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Subway double-line tunnel lining structure manufactured through cut and cover method

A technology of lining and underground excavation, which is applied in the field of tunnels, can solve the problems of increasing project cost and increasing construction difficulty, and achieve the effects of reducing project cost, reducing the amount of reinforcement in the lining structure, and improving the force of the structure

Inactive Publication Date: 2014-07-02
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Doing so will not only increase the difficulty of construction, but also increase the cost of the project

Method used

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  • Subway double-line tunnel lining structure manufactured through cut and cover method

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] Such as figure 1 The shown tunnel lining structure of the subway double-track underground excavation method includes a vault 1 and a vault 2 connected end to end, and a partition wall 5 is also arranged in the tunnel. The cross-section of the vault 1 is semicircular, and the cross-section of the vault bottom 2 is semi-elliptical. The diameter of the semicircle in the section of the vault 1 is equal to the major axis of the semiellipse in the section of the vault bottom 2 . Both the vault 1 and the vault bottom 2 are composed of primary support 3 and secondary lining 4 to form a composite lining.

[0014] During the construction of the subway double-line underground excavation tunnel, the initial support 3 shall be constructed first; when the construction conditions for the secondary lining 4 are met, the secondary lining cons...

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Abstract

The invention discloses a subway double-line tunnel lining structure manufactured through a cut and cover method. The structure comprises a vault and a vault bottom which are connected in an end-to-end mode. The section of the vault is semi-circular, the section of the vault bottom is of a semi-ellipse shape, and the vault and the vault bottom form a composite lining through primary support and secondary lining. Due to the fact that the structure of the section of a tunnel lining is optimized, structure stress in an operational period is improved, it is guaranteed that the lining structure can bear the action of water and soil loads and other extra loads, the sizes of the sections of the structure can be reduced as much as possible, the number of ribs of the lining structure is reduced, and project cost is lowered.

Description

technical field [0001] The invention relates to tunnels, in particular to a subway double-track underground tunnel lining structure. Background technique [0002] During the construction of the subway tunnel, the corresponding space must be excavated first, and then the lining should be built in it. Tunnel construction has the following characteristics: ① It is greatly affected by engineering geology and hydrogeological conditions; ② The working conditions are poor, the working surface is small and narrow, and the working environment is poor; When it is shallow, it may lead to ground subsidence; ④There is a large amount of waste soil and gravel that must be properly disposed of. [0003] The choice of construction method should be based on the geological, topographical and environmental conditions, as well as the embedding depth, among which the embedding depth has a decisive influence on the construction method. For shallow buried projects, the foundation pit or trench is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00
Inventor 裴利华石太伟林东杨均周华龙曾新平
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP