Concave rib weathering resistant steel-concrete combination bridge deck

Abstract

The invention discloses a concave rib weathering resistant steel-concrete combination bridge deck, to effectively reduce the use amount of steel for a bridge deck system, let the construction quality of the bridge deck easily meet the requirements, simplify the construction process and effectively save the engineering cost. The combination bridge deck comprises at least one combination bridge deck unit, wherein each combination bridge deck unit comprises a bottom steel plate and a cast-in-place concrete plate poured on the bottom steel plate, as well as a shear connector for integrally connecting the bottom steel plate with the cast-in-place concrete plate, and is characterized in that the bottom steel plate is a concave rib-shaped bottom steel plate, the surface of which is provided with concave wave crest parts along the length direction in a spacing manner; two ends of the bottom steel plate are connected with closed perforated steel plates in a welding manner along the width direction; the shear connector comprises the wave crest parts concavely formed on the concave rib-shaped bottom steel plate, and reinforcing bar shear connectors fixedly welded on the surface of the concave rib-shaped bottom steel plate; the cast-in-place concrete plate is formed by pouring concrete on the surface of the concave rib-shaped bottom steel plate, and the reinforcing bar shear connectors are buried in the cast-in-place concrete plate.

Description

technical field [0001] The invention relates to composite structure bridges, in particular to a weather-resistant steel-concrete composite bridge deck with concave ribs. Background technique [0002] In the design process of concrete bridges, in order to reduce the self-weight, the bridge deck must be made light. In order to realize industrialized manufacturing and installation, the construction process should be simple. At present, the bridge decks used in bridge engineering mostly use ordinary reinforced concrete decks, steel decks, laminated beam decks or steel-concrete composite decks. [0003] The self-weight of ordinary reinforced concrete bridge deck accounts for a large proportion of the total load of the bridge, and it is not economical when the span is large. The steel bridge deck is light in weight, but requires a large amount of steel, high cost, low bending stiffness, and is prone to large local deformation. The pavement layer has poor high temperature stabilit...

AI Technical Summary

Problems solved by technology

The steel-concrete composite bridge deck has light weight, high bearing capacity and good durability, but it has high requirements for welding technology, large amount of steel coating, and the thickness of the bottom steel plate is generally not less than 8mm

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