Combined bridge deck of assembled road steel bridge

Abstract

The invention discloses a combined bridge deck of an assembled road steel bridge. The combined bridge deck comprises a steel panel (1), two U-shaped steels (31,32) which are parallelly arranged below the steel panel (1) and are adjacent to two side edges of the steel panel (1), a steel middle bottom plate (6) arranged at the middle below the U-shaped steels (3), two steel end bottom plates (41,42) adjacent to two ends below the U-shaped steels (3), two end sealing plates (21,22) arranged on two ends of the U-shaped steels (3) and multiple composite pipes (5), wherein the composite pipes (5) are limited by limit blocks (7) fixedly connected with the middle bottom plate (6) and are uniformly arranged between the two U-shaped steels (3). The combined bridge deck of the assembled road steel bridge not only has sufficient strength and rigidity, but also is light in deadweight, and is convenient and rapid to convey and construct.

Description

technical field [0001] The invention belongs to the technical field of assembled bridges, in particular to a composite bridge deck of an assembled highway steel bridge. Background technique [0002] Assembled bridges (also known as disassembled bridges) have a long history of application. As early as before World War I, France began to develop and apply prefabricated bridge equipment to repair railway bridges, and it was widely used in World War I and World War II. For example, the Bailey Bridge developed by the United Kingdom actually erected more than 4,500 bridges in World War II. By the 1950s, the total global production exceeded 550,000 tons. The prefabricated bridge itself is also constantly developing, and its technology is gradually maturing. Following the rapid repair of bridge equipment by railways, prefabricated highway steel bridges came out. According to incomplete statistics, at present, the number of prefabricated bridges developed by various countries has e...

AI Technical Summary

Problems solved by technology

However, this kind of bridge deck still has the following main problems: First, the bending stiffness of the bridge deck made of pure high-strength lightweight composite fiber material is relatively weak. The advantage of panel weight cannot be reflected; the second is that the bridge deck wear resistance of pure high-strength light composite fiber material bridge deck is insufficient. The cost increases and the engineering economy decreases; third, the direct contact strength between the pultruded rectangular member and the beam is difficult to guarantee, which is determined by the properties of the lightweight composite fiber material

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