Lining construction method for suspension rail type trolley

Abstract

The invention discloses a lining construction method for a suspension rail type trolley. The method comprises the following steps that (1) a primary support is dismounted, 1 / 3 to 1 / 2 of the primary support of a pilot tunnel is dismounted to adapt to the height of the trolley, then the surface of the dismounted portion is leveled, and the dismounted portion of the primary support of the pilot tunnel is a side wall of the primary support of the pilot tunnel; (2) water preventing construction is carried out, and waterproof plates are arranged on the contact faces of a top longitudinal beam, a buckle arch primary support and a designed two-lining buckle arch; (3) steel bars are machined and mounted, and the pre-machined and formed steel bars are transported to an operating face, and are mounted according to design requirements; (4) the trolley is mounted in place, the trolley is lifted, a formwork is lifted to a design position, and concrete pouring is carried out. According to the lining construction method for the suspension rail type trolley, the two-lining buckle arch concrete construction formwork dismounting and shutting time is greatly shortened, the construction period is shortened, and the continuous construction performance is good. Labor cost for splicing and dismounting the formwork and a scaffold is greatly saved. Pouring precision and quality are improved.

Description

technical field [0001] The invention relates to a tunnel lining construction method, in particular to a method for using a suspension rail trolley to carry out the lining construction of a subway underground excavation tunnel. Background technique [0002] Pile Pile Method (PBA) construction Subway underground excavation stations are all constructed by the reverse method. After the construction of the second lining buckle arch is completed, the settlement of the ground surface, pipelines and surrounding buildings above the station is basically stable, and the safety risk is basically eliminated. The second lining buckle can be quickly constructed. Arch concrete can reduce the cumulative settlement of the ground surface, pipelines and surrounding buildings, and also provide a prerequisite for earthwork excavation. [0003] Under the limited space operation environment of the underground excavation station, due to the segmental removal of the initial support of the original up...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of slow construction speed, poor quality, and many working hours in the conventional two-lining buckle arch construction method in the prior art, and provide a suspension-rail trolley lining construction method, especially a construction method in a cave. In the pile method construction, the method of using the suspended rail trolley to carry out the lining construction of the underground excavation tunnel of the subway

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