Jacking pipe enclosure construction method of cross aisle of end of metro station

Abstract

The invention discloses a jacking pipe enclosure construction method of a cross aisle of the end of a metro station. The jacking pipe enclosure construction method comprises the following steps that firstly, a jacking pipe starting well and a jacking pipe receiving well at the two ends of the cross aisle of the end of the metro station are built correspondingly by adopting an open digging construction method; secondly, a pipe jacking device is mounted on the pipe jacking starting well, and a plurality of steel pipe sheets are arranged; jacking pipes are pushed one by one according to the orderfrom bottom to top and from outside to inside so as to complete arrangement of the steel pipe sheets; after pushing of the jacking pipes is completed, a water-stop material is injected into a joint of every two adjacent steel pipe sheets, and connection box bodies integrally form a water-stop sealed large space; building of the main structure of the cross aisle is completed in the area of the multiple steel pipe sheets; and finally the rest of soil mass is dug step by step, and construction of the cross aisle is completed. According to the jacking pipe enclosure construction method, the situations that an existing road is dug and an existing pipeline is removed can be avoided, manual underground digging is avoided, the engineering risk is reduced, auxiliary measures do not need to be taken while ground subsidence can be controlled effectively, and construction of the metro station can be completed rapidly, safely, environmentally and efficiently.

Description

technical field [0001] The invention relates to the technical field of subway station construction, in particular to a pipe jacking enclosing construction method for a cross passage at the end of a subway station. Background technique [0002] In the existing subway station construction project, the subway station constructed by the underground excavation method needs to implement a shaft in the surrounding construction site, and excavate the cross passage through the shaft to open the horse head door to enter the main area of ​​the station. After the construction of the second lining structure of the cross passage is completed, The horse head gate is opened on the side wall, and the main structure of the station is constructed by the underground excavation method. Usually, a station needs to be equipped with 3 shafts and cross passages. [0003] In practical application, in the construction of the existing underground excavation station, the part of the auxiliary structure ...

AI Technical Summary

Problems solved by technology

[0003] In practical application, in the construction of the existing underground excavation station, the part of the auxiliary structure above the ground is usually used as the construction shaft of the underground excavation station. After the construction of the second lining structure of the channel, the pilot tunnel of the station will be excavated step by step. Since all manual work is used, the risk factor is high in the case of rich water

At the same time, due to the narrow construction space, the manual work construction period is long and the construction cost is high

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