Steel Concrete Composite Bridge Deck and Its Construction Method

Abstract

The invention relates to a steel-concrete combination deck plate and a construction method thereof, wherein the steel-concrete combination deck plate comprises: bottom steel plates arranged on steel girders, wherein the bottom steel plates in the bearing regions of the steel girders are bent in shape, and the bottom steel plates are 8-10 mm in thickness; a plurality of shear plates vertically connected to the bottom steel plates; a concrete tier including reinforcement fabric penetrating through the shear plates, wherein the concrete tier is cast to the bottom steel plates, and the combination deck plate is 10-15 cm in thickness. The steel-concrete combination deck plate uses the bottom steel plates as stress-bearing parts as well as a formwork for a cast-in-place desk concrete tier, and steps of mounting and releasing concrete formwork are omitted; the shear plates serve as stiffeners for the bottom steel plates, good combination of the bottom steel plates with the concrete tier can be guaranteed, and cracking of the concrete tier is prevented; the deck thickness is controlled to 10-15 cm and is reduced, the weight is 25% and above lower than that of a composite beam deck system, dead load is reduced, crossing ability, structural strength and durability of the main structure are improved, construction input is reduced, and the efficiency of a construction method is high.

Description

technical field [0001] The invention relates to the technical field of composite structure bridges, in particular to a steel-concrete composite bridge deck and a construction method. Background technique [0002] In the design of modern long-span bridges, the composition of the deck system is mainly divided into three types: concrete deck, pure steel deck and laminated beam deck, specifically: [0003] 1. The concrete bridge deck system is composed of concrete beams and concrete panels. Because the amount of concrete used is large, the weight of the concrete panels is relatively large, resulting in a relatively large overall dead load of the bridge, which makes bridge installation difficult and affects the overall economy of the bridge. sex; [0004] 2. Pure steel deck system, that is, steel girders and steel bridge decks are used. Although the steel deck deck is light in weight, it uses a lot of steel and is expensive; common U-rib welds are easy to crack and difficult to ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a steel-concrete composite bridge deck for the existing concrete beams and reinforced concrete bridge decks that exist in the prior art with heavy weight, long construction period and relatively large construction difficulty, and Construction Method of Steel Concrete Composite Bridge Deck

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