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Variable-section supporting structure of station tunnel and construction method of station tunnel

A technology of supporting structure and construction method, applied in tunnels, tunnel lining, earthwork drilling, etc., can solve the problems of low efficiency and high risk of variable-section excavation, and achieve convenient initial support and secondary lining, short construction period, The effect of reducing the construction period

Inactive Publication Date: 2020-12-04
RANKEN RAILWAY CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a variable-section support structure for station tunnels and a construction method for station tunnels to solve the technical problems of low efficiency and high risk of variable-section excavation for station tunnels and underground construction passages entering station tunnels

Method used

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  • Variable-section supporting structure of station tunnel and construction method of station tunnel
  • Variable-section supporting structure of station tunnel and construction method of station tunnel
  • Variable-section supporting structure of station tunnel and construction method of station tunnel

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Effect test

Embodiment 1

[0039] refer to Figure 1 to Figure 9 The variable section support structure of the station tunnel of the present invention comprises a construction passage 1 and a station tunnel 2, the station tunnel 2 is vertical and connected to the end of the construction passage 1, and the construction passage 1 and the station tunnel 2 are all provided with initial support protection (not shown in the figure) and secondary lining (not shown in the figure), several transverse supports 3 and vertical supports 4 are arranged in the station tunnel 2, and the transverse supports 3 and vertical supports 4 separate the station tunnel 2 For several guide holes. Because the buried depth of the station tunnel is relatively deep and the size is relatively large, the present invention sets a plurality of small pilot tunnels in the station tunnel, and each small pilot tunnel is independently constructed in the axial direction of the station tunnel to complete the excavation of the station tunnel. I...

Embodiment 2

[0048] The construction method of the station tunnel includes the variable section support structure of the station tunnel of embodiment one, and the steps include the following:

[0049] S1 First dig the construction channel 1, and carry out primary support and secondary lining in the construction channel;

[0050] S2 A door frame 6 is installed at the end of the construction passage connected to the station tunnel, and an arch frame 7 is installed under the door frame 6; The circumferential spacing of steel bars is welded and connected as a whole, and the shotcrete is tightly packed.

[0051] S3 According to the direction of the construction passage 1, excavate the station tunnel 2 at the end of the construction passage 1 perpendicular to the direction of the construction passage; specifically: in the transverse direction of the station tunnel, excavate from one end of the station tunnel to the other end of the station tunnel One end; excavate the upper half of the station ...

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Abstract

The invention discloses a variable-section supporting structure of a station tunnel and a construction method of the station tunnel. The supporting structure comprises a construction channel and the station tunnel, wherein the station tunnel is perpendicular to and communicates with the end part of the construction channel; a primary support and a secondary lining are arranged in each of the construction channel and the station tunnel; a plurality of transverse supports and vertical supports are arranged in the station tunnel; and the station tunnel is divided into a plurality of pilot tunnelsby the transverse supports and the vertical supports. According to the variable-section supporting structure disclosed by the invention, a certain reinforcing measure is adopted at the primary jointof the construction tunnel and the station tunnel, the station tunnel is directly expanded and excavated to the section form of the station tunnel after entering the station tunnel, then the station tunnel is transversely excavated to the other end, and then the station tunnels are sequentially excavated, so that the construction period is short, the construction efficiency is high, and the risk is low; and in addition, the small pilot tunnels are arranged in the station tunnel, and each small pilot tunnel is independently constructed in the axial direction of the station tunnel to complete the tunneling of the station tunnel, so that the construction period is shortened, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a variable-section support structure for a station tunnel and a construction method for the station tunnel. Background technique [0002] With the acceleration of urbanization in our country, the use of underground space resources has become one of the most important means to solve traffic congestion and shortage of land resources. For subway stations, due to the deep buried depth and large size of the station, the underground excavation method is mainly used for construction at present. Specifically: dig the construction passage first, then excavate the station tunnel from the construction passage, and finally excavate the station tunnel along the axial direction of the station tunnel; According to the section of the channel, the length of the channel will be fully expanded and excavated in place according to the section of the construction channel. The disadvantag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/14E21D9/00E21D11/00E21D11/10
CPCE21D9/14E21D9/00E21D11/003E21D11/10
Inventor 李小刚黄朝根邹盛全方涛唐顺治郭俊强
Owner RANKEN RAILWAY CONSTR GROUP
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