Subway station local top plate reverse construction structure for relocating gravity flow pipe culvert and construction method

Abstract

The invention relates to a subway station local top plate reverse construction structure for relocating a gravity flow pipe culvert and a construction method. The subway station local top plate reverse construction structure is constructed in a rectangular station foundation pit, a circle of reinforced concrete continuous walls are circumferentially applied, the interior is divided into three areas of a left area A, a middle area B and a right area C, and the gravity flow pipe culvert is relocated from the area C to the area B; the area A is separated from the area B through a longitudinal plain concrete wall, the area B is separated from the area C through longitudinally arrayed SMW enclosing piles, the front side and the rear side of the area B are provided with transversely arrayed SMWenclosing piles, the plain concrete wall on the left side of the area B, the SMW enclosing piles on the right side and the SMW enclosing piles on the front side and the rear side form a rectangular enclosing structure, and a crown beam is arranged at the top of the enclosing structure. According to the structure and the method, the construction process is simple, the construction method conversionis reasonable, the structural system is simple, a foundation pit enclosure system of a local station is effectively constructed, the top plate reverse construction, the pipe culvert permanent relocation and the earth covering construction safety of a region are realized, the secondary relocation is avoided, and the engineering investment is reduced.

Description

technical field [0001] The invention belongs to the technical field of rail transit engineering, and in particular relates to a reverse construction structure and construction method of a partial roof of a subway station for relocating gravity flow pipes and culverts. Background technique [0002] The construction of subway stations is often accompanied by a large number of pipeline relocations. Among them, the gravity flow pipe (culvert) is a kind of non-pressure pipe (culvert) and only relies on the inclination of the pipe body itself to gravity flow. If a large-scale temporary renovation or relocation is carried out, it is often necessary to add a mechanical pump to assist the pressurized flow to overcome the elevation resistance, and then relocate to the original position after the station is completed, and the construction period of a standard station is generally 24 More than a month, the cost of relocation is too high and the mechanical pump during the construction p...

AI Technical Summary

Problems solved by technology

If a large-scale temporary renovation or relocation is carried out, it is often necessary to add a mechanical pump to assist the pressurized flow to overcome the elevation resistance, and then relocate to the original position after the station is completed, and the construction period of a standard station is generally 24 More than a month, the cost of relocation is too high, and the mechanical pump during the construction period will also cause reverse flow or overflow of the relocation pipe (culvert) due to mechanical failure

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