Inverse U-shaped overhead monorail traffic track girder and processing technology thereof

Abstract

The invention discloses an inverse U-shaped overhead monorail traffic track girder which comprises a track girder U-shaped body and bottom plates, wherein the bottom plates include a first bottom plate and a second bottom plate, and the first bottom plate and the second bottom plate are welded at the bottom of the track girder U-shaped body; the first bottom plate comprises a first track girder bottom outer flange and a first track girder bottom inner flange; the second bottom plate comprises a second track girder bottom outer flange and a second track girder bottom inner flange, and the second track girder bottom outer flange and the second track girder bottom inner flange are fixed; and the track girder U-shaped body is molded by rolling or bending. The track girder disclosed by the invention is convenient for construction transportation and field installation, the flatness of the inner section of the track girder is guaranteed, and the comfort degree is high. According to the invention, primary and secondary stress regions are divided, wherein the track girder bottom flanges which have relatively large stress can be integrally molded by rolling or bending by adopting relatively thick steel plates, and the other regions which have relatively small stress can be integrally molded by rolling or bending by adopting relatively small-thickness steel plates, thereby being favorable for reducing the steel consumption, reducing the welding workload and improving the processing and manufacturing efficiency.

Description

technical field [0001] The invention relates to the field of rail traffic, in particular to an inverted U-shaped suspension monorail rail beam and a processing technology thereof. Background technique [0002] The suspended monorail transportation system is the sky rail train. The track is above the train and supported in the air by steel or cement columns. Since the ground traffic is moved to the air, urban traffic problems can be alleviated without expanding the city's existing road facilities. And because it only moves the track into the air, instead of lifting the entire road into the air like elevated light rail or riding monorail, it overcomes the disadvantages of other rail transit systems and has many outstanding features and advantages in terms of construction and operation. . Although suspended monorail traffic has many advantages, there are mainly the following difficulties in the manufacture of existing suspended monorail traffic track beams: [0003] (1) If t...

AI Technical Summary

Problems solved by technology

[0003] (1) If the existing track girder adopts reinforced concrete prefabricated structure, its mass is relatively large, construction, transportation and on-site installation are difficult, the requirements for hoisting machinery used are relatively high, construction cost is high, and construction safety risks are relatively large; through The reinforced concrete structure prefabricated by formwork has poor appearance and dimensional accuracy, and it is difficult to ensure the flatness of the inner section of the track beam, which leads to bumpy trains and poor comfort during travel

[0004] (2) The main body of the existing track beam is in the form of a closed section with the bottom disconnected. It is formed by welding steel plates. It is formed by cutting the steel plates into strips and assembling and welding the strips. The welding process is large and the manufacturing efficiency is high. Low, large welding deformation, poor forming accuracy of track beams, and difficult to guarantee quality; at the same time, the shape of the transverse stiffener is irregular, resulting in a large loss of cutting and blanking of the stiffener, and serious cost waste. The connection welding of the transverse stiffener and the main box There are many intersecting and overlapping areas between the seam and the main body of the track beam, which may easily cause accumulation of welds and affect the quality of the joints. Welding holes will increase the blanking loss of the stiffener, and the welding seam is discontinuous, and the welding efficiency is extremely low

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