City track traffic U type beam

Abstract

The invention discloses a U-shaped girder for urban rail traffic. A girder body is connected into a channel with a U-shaped section by a bottom plate, web plates on both sides and flange plates at the top of the web plates. The upper surface of the bottom plate is connected with a support rail platform, a power supply device, a power supply cable bearing body and a communication signal cable bearing body are fixedly connected along the length direction of the girder body, the web plates on both sides are asymmetric, wherein, a bending arc even wall thickness web plate is on one side and the flange plate connected with the top of the side web plate is a 7-shaped flange plate, namely, only an inward flange is arranged; a smooth and thickness-adding bending arc non-even wall thickness web plate with the exterior of medium-and-upper-sections thereof being prominent is on the other side, and the flange plate connected with the top of the web plate is a T-shaped flange plate, namely, an internal flange and an external flange are arranged. The girder can save materials and improve the torsion resistance capacity of an opening thin-wall U-shaped girder. By utilizing the bottom plate to support the rails and trains, the girder reduces the standard height of the rails and the entire height of a bridge, diminishes the impact on the surrounding environment, and prevents the trains from running out of the bridge after running off rails. The girder is applicable to medium-span bridges with the height of about 30 meters for the urban rail traffic.

Description

technical field [0001] The invention relates to a viaduct track bed supporting member for supporting rails. Background technique [0002] Traditional viaducts generally use top-supporting box-section members or T-section members to support the track. The disadvantages are that the overall height of the building is large and the space utilization rate is low, which not only has a great impact on the urban landscape, but also creates a sense of depression for people on the ground. , and it is easy to cause noise disturbance to nearby residents. Moreover, if the train derails, the train will easily rush out of the bridge, causing harm to surrounding buildings and people. Known U-shaped beams, such as the Chinese patent application whose publication number is CN 101120140A and titled "U-shaped spans for railway tracks", have a symmetrical beam body with equal-wall thickness webs on both sides. Net column and sound insulation barrier, it is necessary to increase the wall thickn...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a U-shaped beam for urban rail transit, to solve the problems of reducing the material consumption of U-shaped components, improving the torsion resistance of the thin-walled U-shaped beam with openings, and solving the problem of unsafe walking of maintenance personnel and poor safety protection. bad question

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