Subway station prefabricated rail top air duct, connecting joint of subway station prefabricated rail top air duct and prefabricated middle plate and construction method

Abstract

The invention discloses a subway station prefabricated rail top air duct. The subway station prefabricated rail top air duct comprises a rail top air duct left side wall, a rail top air duct right side wall, a rail top air duct bottom plate, a plurality of inverse U-shaped steel bars, longitudinal perforated holes and longitudinal locking steel bars; the rail top air duct left side wall, the railtop air duct right side wall and the rail top air duct bottom plate form a groove shape structure; the inverse U-shaped steel bars are embedded in the upper parts of the rail top air duct left side wall and the rail top air duct right side wall in the longitudinal direction, the upper parts of the inverse U-shaped steel bars extend the tops of the side walls to form a closed loop, and the closed loop is used for penetrating through dowels and provoking the inverse U-shaped steel bars and is integrally embedded into prefabricated hole grooves of the prefabricated middle plates of a subway station to be poured into a whole; and the longitudinal perforated holes penetrate through the rail top air duct left side wall, the rail top air duct right side wall and below the inverse U-shaped steel bars in the longitudinal directions and are used for penetrating through the longitudinal locking steel bars, so that the two adjacent prefabricated rail top air ducts are fixed. The problem that the subway station rail top air duct is difficult to construct is solved, simpleness and convenience are achieved, and the construction speed is high.

Description

technical field [0001] The invention belongs to the field of subway station underground engineering, and in particular relates to a prefabricated rail top air duct of a subway station, and a connection node structure between the prefabricated rail top air duct of the subway station and the prefabricated middle plate. Background technique [0002] During the construction process of the subway station, there are two ways of existing track top air ducts: cast-in-place and prefabricated, but the existing solutions have their own defects. [0003] Problems in the construction of cast-in-place rail top air duct include: [0004] (1) The rail top air duct is located below the middle plate of the subway station and above the track. It is a secondary structure of the station and needs to be constructed later due to factors such as shield tunneling. During the later construction of the rail top air duct, the scaffolding for erecting the middle plate has been removed, and the scaffold...

AI Technical Summary

Problems solved by technology

Aiming at at least one of the above defects or improvement needs of the prior art, the present invention provides a prefabricated rail top air duct and node structure of a subway station, which solves the problem of difficult construction of the rail top air duct of a subway station, is simple and convenient, and has a fast construction speed; Good durability, good integrity, high quality, safety and reliability; save construction period and investment; mechanized prefabricated construction, green environmental protection, energy saving and low carbon, will be widely used in cast-in-place subway stations and prefabricated subway stations, Has a broad market prospect

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