Composite material bridge surface ancillary facility of rail way prestress concrete box girder

Abstract

The invention relates to a composite material bridge surface ancillary facility of a rail way prestress concrete box girder. Cable troughs are formed in the upper surfaces of the two sides of the box girder, walking plates are installed at the tops of the cable troughs, and curtain plates are installed on the outer side of the cable troughs; and handrails or sound barriers are installed on the edges of the two sides of the box girder. Main components of the composite material bridge surface ancillary facility are made of fibre reinforcing composite materials, the materials are light in mass and high in intensity, the secondary permanent load of a bridge girder is little, the geometry size of the bridge girder can be reduced, and distributed bars and prestress bars of the bridge girder are reduced, so that the total weight of the bridge girder is reduced.

Description

technical field [0001] The invention relates to an auxiliary facility of a railway prestressed concrete box girder composite material bridge deck. Background technique [0002] Railway prestressed concrete box girder gradually replaces T-beam in railway construction and becomes the most widely used beam type in railway bridge construction. The box girder is a kind of middle girder in bridge engineering, the inside is hollow, and there are flanges on both sides of the upper part, similar to a box. The auxiliary facilities of the bridge deck are the auxiliary structures outside the protective wall of the main structure of the bridge. They are indispensable and play an important auxiliary function. The auxiliary facilities mainly include shutters, cable ducts, vertical walls, and cable duct covers (also used as walking boards) , railings, sound barriers, etc. [0003] Among them, the shroud is a prefabricated reinforced concrete structure, the vertical wall is a cast-in-situ ...

AI Technical Summary

Problems solved by technology

The quality of the existing railway prestressed concrete box girder prefabricated auxiliary facilities is too large, and the requirements for construction equipment during the construction process are relatively high. Lifting equipment is required for on-site installation, thereby increasing the cost of machinery and equipment. Personnel and site materials pose a safety hazard

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