Construction method for auxiliary air duct structure of underground excavation station

A construction method and station technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of large amount of cross-channel excavation, long construction period, and high construction cost, so as to shorten the construction period, reduce construction costs, The effect of reducing the construction scale

Active Publication Date: 2016-02-03
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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Problems solved by technology

[0004] However, the construction of the above-mentioned underground excavation method requires that the construction shaft of the underground excavation station is relatively wide

Method used

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  • Construction method for auxiliary air duct structure of underground excavation station
  • Construction method for auxiliary air duct structure of underground excavation station
  • Construction method for auxiliary air duct structure of underground excavation station

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Embodiment Construction

[0034] Such as Figure 1 to Figure 7 As shown, this embodiment proposes a construction method for the auxiliary air duct structure of the underground excavation station. Such as figure 1 As shown, the construction of the air duct structure includes the construction of the station cross passage and the cross passage of the air duct, and the construction methods are as follows:

[0035] Step one, such as figure 1 As shown in the figure, the vertical shaft 1 outside the ground range of the air duct is constructed by the method of hanging the shaft wall upside down, and the shaft grid steel frame (not shown in the figure) is installed in the shaft 1, and the vertical shaft grid steel frame is installed while the construction is in progress.

[0036] In order to facilitate later construction, connecting ribs are reserved on the well wall of shaft 1.

[0037] Step 2, setting temporary supports 12 in the shaft. In order to improve the support strength, the temporary support 12 ad...

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Abstract

The invention discloses a construction method for an auxiliary air duct structure of an underground excavation station. The method at least comprises station transverse passageway construction and air duct transverse passageway construction. The construction method includes the following construction steps that first, a vertical well out of the ground range of an air duct is constructed by the adoption of an inverted-hanging well wall method; second, temporary supports are arranged in the vertical well; third, a horsehead reinforced ring beam is constructed; fourth, a station transverse passageway advance support with the arch portion arranged in a 180-degree mode is driven; fifth, an air duct transverse passageway is excavated on the half side; sixth, a station transverse passageway and the air duct transverse passageway are back-filled to an air duct structure bottom plate, an air duct secondary lining structure is back-constructed, and the integral type structure is completed. Due to the facts that the auxiliary air duct structure is constructed through the underground excavation method and only the half-side air duct is subjected to underground excavation to be adopted as station transverse passageway pilot tunnels, the construction scale of the underground excavation station transverse passageway is reduced, the construction period is shortened, and the construction cost is lowered.

Description

technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a construction method for an auxiliary air duct structure of an underground excavation station. Background technique [0002] With the rapid and sustainable development of my country's urban economy, urban road traffic conditions are becoming increasingly tense, and underground transportation station transportation has gradually become the main traffic artery for large-capacity rapid public transportation systems. At present, for underground stations, the open-cut method or the underground method is usually adopted. However, due to the large construction area of ​​the open-cut method, the surrounding commercial and residential buildings are dense, the traffic is heavy, and the constraints of dense underground pipelines and underground structures make the application of the open-cut method subject to certain restrictions. [0003] The underground exca...

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Application Information

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IPC IPC(8): E21D9/00E21D1/00E21D11/36E21D5/06
Inventor 张向霞徐正良黄爱军张增峰
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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