Construction method for external hanging of accessory structures of subway station

Abstract

The invention discloses a construction method for external hanging of accessory structures of a subway station. The construction method comprises the following steps that a ventilation pavilion groupis moved out of a main tunnel, ground is centrally led out from a tunnel opening of an end section, the accessory structures are hung externally and arranged centrally, the number of openings of a main structure, and the ventilation pavilion group is combined with an entrance and exit, and construction sites are arranged uniformly. A complex and effective delta-shaped tunnel-entering method is used in the conversion of a large cross-section transverse passage and a main station. According to the construction method for the external hanging of the accessory structures of the subway station, aninnovative construction technology of delta-shaped cross-section tunnel-entering is used, and the risk of the large cross-section transverse passage entering the main station is reduced.

Description

technical field [0001] The invention belongs to the technical field of auxiliary structure design of subterranean excavation stations in mountainous cities, and relates to a construction method for external hanging of auxiliary structures of subway stations. Background technique [0002] Mountainous cities generally have narrow roads, traffic congestion, and dense buildings on both sides, often without suitable construction sites, such as Chongqing and Guiyang. Therefore, the underground excavation method is generally used for the construction of subway stations in the central areas of mountainous cities. However, the construction layout of the auxiliary structural facilities of the subway station on the surface is still a key issue in the construction of the underground excavation method, which is mainly reflected in the following two aspects: [0003] 1) The auxiliary structure of the subway station is built in an area restricted by the surrounding environment and terrain,...

AI Technical Summary

Problems solved by technology

Multiple horse head gates are opened on the main structure of the subway station, which will affect the overall force of the main structure of the station, increase the amount of work, increase the difficulty of the project and increase the construction risk

[0007] 2) Due to the scattered layout of the auxiliary structures, a large amount of demolition and relocation of the surface is caused, and the project investment is huge, which occupies too much of the investment amount of the station construction and affects the development of other engineering projects of the station construction

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