Underground excavation subway station with suspension type station hall layer and independent rail-mounted area and construction method thereof

Abstract

The invention discloses an underground excavation subway station with a suspension type station hall layer and an independent rail-mounted area and a construction method thereof. The station is composed of a main body part and an auxiliary part; the main body part comprises the station hall layer, a downlink channel, an air channel and a platform layer; the auxiliary part comprises an external equipment room; the platform layer is composed of a rail-mounted area tunnel and a plurality of exchange channels; the rail-mounted area tunnel is divided into an ascending rail-mounted area tunnel and a descending rail-mounted area tunnel according to the subway driving direction; the ascending rail-mounted area tunnel and the descending rail-mounted area tunnel are arranged in parallel at intervals in the longitudinal direction of subway driving; the plurality of exchange channels are transversely arranged at intervals; rock pillars are arranged between the exchange channels; and the station hall layer is arranged on the two sides of the upper part of the platform layer in a suspended mode and is independently divided into two halls arranged in a suspended mode in the longitudinal direction. Therefore, traditional defects are overcome, the overall mechanical property of the structure is good, underground pipelines near the station or surrounding important buildings can be flexibly avoided, different areas of the station can be adjusted according to local conditions, the arrangement is flexible and simplicity and efficiency are achieved.

Description

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

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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