Subway station steel fiber concrete prefabricated rail top air duct

Abstract

The invention discloses a subway station steel fiber concrete prefabricated rail top air duct. The air duct comprises a station middle plate and a plurality of prefabricated rail top air duct units, all the prefabricated rail top air duct units are sequentially spliced in the front-back direction, and the top of each prefabricated rail top air duct unit is connected to the bottom face of the station middle plate; and each prefabricated rail top air duct unit is formed by prefabricating steel fiber concrete, and comprises a rail top air duct outer side wall, a rail top air duct bottom plate and a rail top air duct inner side wall, wherein the top of each rail top air duct inner side wall and the top of each rail top air duct outer side wall are each provided with a connecting device connected to the station middle plate. According to the subway station steel fiber concrete prefabricated rail top air duct, the prefabricated rail top air duct units are prefabricated from steel fiber concrete, the structural strength and durability of components are effectively improved, the mechanical performance is good, meanwhile, the weight of the components is reduced, hoisting and mounting are convenient, and the mounting firmness is improved.

Description

technical field [0001] The invention relates to the technical field of rail top air ducts, in particular to a steel fiber concrete prefabricated rail top air duct of a subway station. Background technique [0002] Rail top air duct is an essential part of the subway station ventilation system. There are two types of air ducts on the rail top of the station: prefabricated and cast-in-place. At present, more cast-in-place methods are used, and the scope of use of prefabricated rail top air ducts is relatively small. The cast-in-place rail top air duct is generally not poured at the same time as the main body of the station. Post-casting is used to ensure the passing limit of the shield machine. Due to the narrow construction space, it is time-consuming and laborious to erect supports, erect formwork, and bind steel bars. The construction is difficult and the construction quality is difficult to obtain. ensure. Compared with the cast-in-place method, the prefabrication method...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a steel fiber concrete prefabricated rail top air duct in a subway station, so as to overcome the problem that the existing prefabricated rail top air duct is prefabricated with ordinary reinforced concrete, and the prefabricated parts are too heavy, so that there are potential safety hazards in the steel structure nodes and high maintenance costs in the later period Shortcomings

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