Method for tunneling construction of main structure of underground station

Abstract

The invention discloses a method for tunneling construction of a main structure of an underground station. In the method, the air shaft and air duct are excavated at first for the station and are then used as construction channels for excavation of the main structure of the station. The method for tunneling construction of the main structure of the station comprises the following steps: forming a reinforcing ring at the air duct port with a composite initial support; excavating the soil mass of a middle hole according to a certain sequence; constructing the internal structure of the middle hole; excavating the soil mass of a side hole; and constructing the internal structure of the side hole. The scheme can realize the smooth force transfer in the excavation of the soil mass, the initial support and the construction of permanent structures, avoid excessive adverse force-bearing states during the construction of the permanent structures, facilitate the construction, enhance the construction safety and construction efficiency, improve working conditions and ensure the quality of the project.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a construction method for underground engineering. Background technique [0002] With the rapid and sustainable development of my country's urban economy, urban road traffic conditions are becoming increasingly tense. City builders realize that the only way to solve the problem of urban passenger transport is to develop a large-capacity rapid public transport system with underground railways as the backbone. Especially in recent years, in several large cities in my country, such as Beijing, Shanghai, Guangzhou, Shenzhen, etc., the construction of subways has entered a period of unprecedented growth. For underground stations, the open-cut method is usually used. However, in the downtown area, there are dense commercial, corporate, financial, and residential buildings, heavy traffic, expensive land, and the constraints of dense underground pipelines and underground structures, ...

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Problems solved by technology

[0004] Relevant foreign data show that the excavation of underground subway stations in Germany, Russia, Japan and other countries mostly adopts the shallow buried underground excavation method and the shield method, or the combination of the shield method and the mine method, but there is no formed middle hole method. Design and Construction Technology

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