Underground excavation subway station with suspended station hall floor and independent track area and its construction method

Abstract

A subterranean excavation subway station with suspended station hall layer and independent track area and its construction method. The station is composed of a main part and an auxiliary part. Part of it includes an external equipment room. The platform layer is composed of a track area tunnel and an exchange channel. The tunnels in the row area are arranged in parallel in the longitudinal interval of the subway train. The exchange channels are multiple and arranged at intervals in the transverse direction. Rock pillars are respectively arranged between each exchange channel. In the vertical direction, it is independently divided into two suspended halls; thus, the present invention overcomes the traditional defects, the overall mechanical properties of the structure are better, and it can flexibly avoid underground pipelines near the station or important surrounding buildings and structures, and different areas of the station can be adapted to local conditions. Flexible layout, simple and efficient.

Description

technical field [0001] The invention relates to the technical field of architectural structures of urban subway stations, in particular to an underground excavation subway station with a suspended hall floor and an independent track area and a construction method thereof. Background technique [0002] As an important component of urban rail transportation, subway is playing an increasingly positive role in passenger transportation in densely populated cities. Since the appearance of the subway is to solve urban traffic congestion and fill the gap of urban traffic speed, it is often necessary to consider building subway stations in downtown areas. However, in terms of construction method, if the open-cut method is adopted, it will inevitably increase the traffic congestion in the downtown area, so the open-cut method is usually used for construction in the downtown area of ​​the city. [0003] The common main body of the station is generally a one-piece double-layer structur...

AI Technical Summary

Problems solved by technology

At the same time, due to civil air defense purposes or overall planning restrictions, the buried depth of the platform layer of the station itself may be relatively large. For the end with a large buried depth, the entrance and exit for entering and exiting the ground may exceed 100m, which is not conducive to the evacuation and boarding of passengers. Efficiency, and according to the code requirements, the entrances and exits over 100m need to take measures to meet the fire evacuation requirements, which will increase the amount of engineering and economic costs

[0006] 2. When using the underground excavation method to construct an integrated double-deck station, due to its large cross-sectional span, it is easy to cause large deformation and cause structural failure. Therefore, strong support is required during construction, and the overall construction is risky and difficult. ,high cost

At the same time, the space utilization rate is low, and the functional division cannot be reflected in the structure, so the division is not clear enough, not economical and environmentally friendly

[0007] 3. For urban construction-intensive areas, there are many surrounding underground structures and underground pipelines, and the traditional integrated double-decker station cannot be flexibly avoided, resulting in the need to relocate surrounding buildings, structures and pipelines, and the economy is poor

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