Subway station prefabricated rail top air duct and installation mode thereof

Abstract

The invention discloses a subway station prefabricated rail top air duct and an installation mode thereof, and belongs to the technical field of building engineering. The prefabricated rail top air duct is in a square shape and comprises left and right air duct walls, a top plate and a bottom plate, wherein the left and right air duct walls comprise the left air duct wall and the right air duct wall, and the upper end faces of the left air duct wall and the right air duct wall are both provided with horizontal reinforcing bars. According to the subway station prefabricated rail top air duct and the installation mode thereof, the prefabricated rail top air duct and a middle plate are anchored and connected by using the horizontal reinforcing bars extending outwards and cast-in-place concrete, the prefabricated rail top air duct and the middle plate are simultaneously constructed, so that secondary civil construction is not needed, the construction procedures are fewer, the constructionis more convenient, the construction efficiency is higher, the structural integrity is better, and meanwhile, the problem that a steel structure is prone to corrosion and prone to breakage due to explosion is solved. Furthermore, first grooves are reserved in the air duct walls, the top plate and the bottom plate in the longitudinal direction, seams is filled with rubber strips and sealing glue, bolt holes are reserved at the four ends of the air duct, pre-tightening force is provided through bolts during installation, two sections of air ducts are connected, and on the premise of meeting thesealing requirements, more safety and reliability are achieved.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a prefabricated rail top air duct of a subway station and an installation method thereof. Background technique [0002] Nowadays, the construction of rail top air ducts in subway stations mainly adopts the traditional production method based on on-site construction. This production method has a low degree of industrialization, relatively extensive design and construction, unstable product quality, low construction efficiency, large labor demand, and material loss. The large amount of construction waste and resource and energy consumption cannot meet the sustainable development requirements of energy saving and environmental protection. In terms of construction, there are mainly the following shortcomings: [0003] 1. Since the clearance height of the air duct on the rail top is generally less than 1 meter, it is very difficult to implement formwork e...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the clearance height of the air duct on the rail top is generally less than 1 meter, it is very difficult to implement formwork erection and steel bar binding

[0004] 2. It is difficult to pour the hanging wall of the air duct on the top of the rail, and it is difficult to pour it densely. For the top-hung screen door, the positioning of the air duct civil construction is required to be controlled within 10mm. If the construction accuracy cannot be achieved, the rectification is particularly difficult

[0005] 3. After the construction of the main structure inside the station is completed, the second construction of the rail top air duct will be carried out, which requires the second entry of civil engineering. At the same time, electromechanical installation, station decoration and track construction will also enter the site. There will be cross operations, which will affect the construction period of the whole line

[0007] 1. The key connection nodes under permanent force are connected by steel structure, which has the problem of anti-corrosion and fire prevention, and the later maintenance cost is high

[0008] 2. The airtightness of the longitudinal connection is not considered in the prefabricated rail top air duct, and the airtightness cannot be guaranteed

[0009] 3. The components of the ordinary concrete prefabricated rail top air duct are too heavy and the construction is difficult

[0010] 4. Secondary civil work is still required, and construction efficiency has not improved

[0011] 5. It is necessary to drill holes in the middle plate to hang the prefabricated air duct for installation, and the construction accuracy is not high

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