Cross-railway road bridge protection structure

Abstract

The invention discloses a cross-railway road bridge protection structure which comprises a lower cover plate and an upper cover plate, wherein the lower cover plate is arranged between main beams at the position of a center partition zone of two bridges, and the upper cover plate is arranged between guard bar bases of bridge floors at the position of the center partition zone of the two bridges. The lower cover plate comprises a lower cover plate steel plate and stiffening ribs welded to the bottom of the lower cover plate steel plate, the upper cover plate comprises an upper cover plate steel plate and a reinforced concrete plate connected on the upper cover plate steel plate through shearing connectors, and rubber plates are pasted between the lower cover plate steel plate and the main beams and between the upper cover plate steel plate and the guard bar bases respectively. The cross-railway road bridge protection structure is arranged between the two bridges, it can be safely and reliably guaranteed that the center partition zone is closed, objects are prevented from falling into a railway clearance, normal running of a railway is prevented from being influenced by the fact that vehicles cross guard bars to fall, the defects of a traditional protection structure are overcome, and the scientificity and the reliable degree of a safety protection measure are improved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering bridge design, and in particular relates to a bridge protection structure for a highway crossing a railway. Background technique [0002] In the safety protection structure of bridges with highways crossing railways, anti-throwing nets and horizontal disaster prevention nets are often used. Under the combined action of the two, falling objects larger than the mesh size can be prevented from falling. Railways, especially bridges across high-speed railways are widely used. [0003] Highway bridges are divided into two types: single-width bridges and double-width bridges. When the bridge deck is wide, double-width bridges are mostly used, and a central divider is used to separate the two bridges. The traditional protection form of anti-throwing net plus horizontal disaster prevention net has certain strength and rigidity, which can prevent the falling of general falling objects and play a ...

AI Technical Summary

Problems solved by technology

However, the adoption of this protective measure at the median strip of the highway bridge of the two bridges will seriously affect the driving vision of the vehicles on the highway bridge deck, and cannot effectively prevent the vehicles from jumping over the guardrail and falling into the limit of the railway building to cause harm

In addition, the setting of the horizontal disaster prevention net requires a certain amount of space, and the mesh holes of the anti-throwing net and the horizontal disaster prevention net cannot prevent small falling objects smaller than the size of the mesh from falling

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