Prefabricated subway station rail top air duct structure and construction method thereof

Abstract

The invention discloses a prefabricated subway station rail top air duct structure. The prefabricated subway station rail top air duct structure is formed by assembling and connecting a plurality of prefabricated rail top air duct units in the length of the air duct. The prefabricated rail top air duct units comprise left side plates, right side plates and air duct bottom plates, the left side plates and the right side plates are vertically arranged, the air duct bottom plates are horizontally disposed and located at the bottom between the left side plates and the right side plates, the left side plates, the right side plates and the air duct bottom plates are integratedly formed by pouring, left side connecting reinforcing bars for connecting the left sides of middle plates are arranged at the upper ends of the left side plates, and right connecting reinforcing bars are arranged at the upper ends of the right side plates. The invention further discloses a construction method of the prefabricated subway station rail top air duct structure. The prefabricated subway station rail top air duct structure is simple, convenient to lift and assemble; the construction method is high in speed, the construction quality of a rail top air duct is easily ensured, the construction period of a subway station structure is shortened, and the economics of the project benefit is improved.

Description

technical field [0001] The invention belongs to the field of tunnel excavation, and in particular relates to a prefabricated subway station track top air channel structure and a construction method thereof. Background technique [0002] The rail top air duct is a square ventilation duct composed of the middle plate of the subway station and the rail top air duct structure. [0003] It is an important internal structural component in the ventilation system of the subway station, which is mainly used to ventilate and dissipate the top of the train. It is installed at the junction of the middle plate and the structural side plate of the station, and efficiently removes the heat emitted by the train air conditioner condenser to the outside through the air holes on the bottom plate of the air duct on the ground. [0004] There are two kinds of existing subway station rail top air duct construction methods. The first method is: the rail top air duct and the middle plate structur...

AI Technical Summary

Problems solved by technology

[0005] The construction period of the first construction method is longer, and the construction period is not easy to guarantee

The second construction method requires a large amount of welding between rail top air duct steel bars and pre-embedded bars. A large amount of materials have to be transported from the reserved openings to the working surface. Concrete is poured from the pre-embedded holes in the middle plate, and the quality is not easy to guarantee.

The inner size of the rail top air duct is small, and the operating efficiency of personnel is low

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