An expansion method for the existing subway underground excavation stacked island transfer station

Abstract

The invention discloses an expansion method of an existing subway underground excavation stacked island transfer station. The expansion is carried out by building a new external-mounted open-cut platform structure on one side of the existing transfer station. The rooms are connected through the underground excavation connection channel constructed from one side of the open excavation structure. The invention doubles the width of the station platform by building a new open-cut platform structure; by optimizing the transfer streamline, the transfer flow of passengers in the existing Diedao station is reduced to 1 / 2 of the original, thereby doubling the existing station Transfer ability. In the present invention, the newly-built platform structure adopts the open-cut method for construction, the technology is mature and reliable, the construction risk is reduced, and the project cost is reduced. In the present invention, the newly-built connecting channel adopts the construction method of underground excavation, which reduces the land occupation of the project and avoids affecting road traffic. In the present invention, the construction of the new connecting channel and the interface of the existing station, the relocation of the existing cable, the platform door, the reconstruction of the signal system, etc., are all carried out during the skylight time, so as to avoid affecting the operation of the station.

Description

technical field [0001] The invention belongs to the technical field of extension of existing subway stations, and in particular relates to an extension method of an existing subway submerged island transfer station. Background technique [0002] With the population growth of many cities and the improvement of the subway line network, the passenger flow pressure of subway transfer stations is becoming more and more obvious. The existing transfer capacity is difficult to meet the actual passenger flow needs. The reconstruction and expansion of existing subway stations will become the future of subway construction. The problem. [0003] Underground excavation and island transfer stations of the subway are deeply buried, construction is difficult, and the surrounding environment is generally more complicated. The difficulty of large-scale renovation and expansion is significantly higher than that of open excavation stations. Contents of the invention [0004] The present inve...

AI Technical Summary

Problems solved by technology

[0003] Underground excavation of subway stations with stacked islands is buried deep, construction is difficult, and the surrounding environment is generally more complex. The difficulty of large-scale renovation and expansion is significantly higher than that of open excavation stations.

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