Downwards-penetrating metro support structure and manufacturing method thereof

Abstract

The invention relates to a downwards-penetrating metro support structure and a manufacturing method thereof. The downwards-penetrating metro support structure comprises a working well, a support frameand connection parts. The working well extends vertically into the ground along the two sides of an existing metro station. The support frame is arranged below the existing metro station, communicates with the working well, forms a channel downwards penetrating through a metro and comprises a pipe curtain wall. The connection parts connect the support frame, the working well and the existing metro station and are used for preventing deformation of the existing metro station. According to the technical scheme provided by the invention, the pipe curtain support rigidity is high, the supportingability for the upper station is high, deformation of the upper station can be controlled effectively, the vertical clear distance of a newly-built structure and the existing station is reduced, and the construction cost is reduced; and secondly, the mode that the pipe curtain wall and a freezing pipe are combined is adopted, the pipe curtain serves as the support structure, a freezing curtain anda pipe curtain locking opening jointly form two waterproof curtains, the freezing size is reduced while water stopping is ensured, and the influences of frost heaving and thaw collapse on deformationof the existing metro station are well controlled.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to an underpass subway support structure and a manufacturing method thereof. Background technique [0002] In the development of the city, the subway has played a vital role due to its large passenger capacity, high speed and punctuality. With the increase in the intensity of subway construction in recent years, the subway lines have gradually formed into a network, and the number of transfer stations is increasing. However, due to the long interval between planning rounds of subway construction, some subway stations in the early batch cannot be determined in the early design process. Whether there is a long-term transfer station, or the specific location of the transfer station is uncertain, so it is impossible to reserve structurally, mainly in the following aspects: the diameter of the station enclosure structure (such as underground diaphragm wall or bored pile reinforcem...

AI Technical Summary

Problems solved by technology

[0009] Aiming at building a new station under the existing subway station, it solves the problems of inrush of pressurized water and large construction volume of frozen soil when excavating under the ground, and at the same time controls the deformation of the existing station above, so that the force transmission of the new and old structures is clear and effective , does not affect the operation of the existing station, it is necessary to provide a support structure for the underpass subway and its manufacturing method

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