Construction method for simultaneously pouring metro rail top air passages and middle plate

Abstract

The invention discloses a construction method for simultaneously pouring metro rail top air passages and a middle plate, and belongs to the field of tunneling. Construction of a middle plate lower side wall of a station is firstly carried out, and concrete pouring and form removal are completed; and then construction of the rail top air passages and the middle plate is carried out. The rail top air passages and the middle plate are constructed according to the following steps that a, construction of the rail top air passages, a middle plate support except the corresponding position of the railtop air passages, base plate templates and external templates of rail top air passage vertical walls is carried out; b, reinforcing bars of the middle plate base plates except the corresponding position of the rail top air passages, the rail top air passage vertical walls and the rail top air passage base plates are manufactured and installed; c, construction of interior templates of the rail topair passage vertical walls, the base plate templates and middle plate supports of the rail top air passage positions is carried out; d, construction of reinforcing bars of the middle plate is carriedout; e, concrete pouring of the rail top air passages and the middle plate is carried out; and f, form removal is carried out. According to the construction method for simultaneously pouring the metro rail top air passages and the middle plate, the quality of concrete pouring of the rail top air passage vertical wall is ensured, and integrality of concrete bonding of the rail top air passage vertical wall and the middle plate is enhanced.

Description

technical field [0001] The invention belongs to the field of tunnel excavation, and in particular relates to a construction method for simultaneous pouring of a subway rail top air channel and a middle plate. Background technique [0002] The rail top air duct, that is, the train top exhaust duct, is an important internal structural component in the ventilation system of a subway station, and its main function is to ventilate and dissipate heat on the top of the train. The main structure of the rail top air duct includes the vertical wall of the rail top air duct and the bottom plate of the rail top air duct, which are suspended at the junction of the middle plate of the station and the structural side wall. Due to the complex structure of the rail top air duct, high construction precision, small internal space and many reserved holes, it has always been a difficult problem in the construction work. [0003] The traditional operation method is to use the post-pouring method...

AI Technical Summary

Problems solved by technology

Due to the complex structure of the rail top air duct, high construction precision, small internal space, and many reserved holes, it has always been a difficult problem in construction work

[0003] The traditional operation method is to use the post-pouring method for construction. During construction, the concrete is usually poured through the holes reserved in the middle plate. Due to the small space for concrete pouring on the surface of the rail top air duct, the height and thickness of the vertical wall of the rail top air duct are relatively high. Thin, it is difficult to guarantee the quality of concrete pouring; at the same time, due to the construction gap between the vertical wall of the rail top air duct and the middle slab concrete, the bonding is poor, and the rail top air duct mainly relies on the reserved steel bars for load bearing, posing certain safety hazards

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