Road bridge expansion joint structure

Abstract

The invention discloses a road bridge expansion joint structure. The road bridge expansion joint structure comprises a left bridge girder, a right bridge girder and an expansion joint; the expansion joint is formed between the left bridge girder and the right bridge girder; limiting blocks are arranged on the two sides of the lower end of the expansion joint; the two limiting blocks are correspondingly fixed on the left bridge girder and the right bridge girder; and a purpose of the expansion joint is realized by coordinated relative movement of left comb teeth and right comb teeth. Meanwhile,an elastic cushion block expands and retracts together with the expansion joint in the expanding and retracting process of the expansion joint; rainwater on a road bridge can enter a flowing channelof the elastic cushion block from the surface of the road bridge through a gap between the left comb teeth and the right comb teeth and can be drained from the flowing channel; and therefore, the water drainage efficiency of the road bridge is greatly enhanced. The strength of the connecting parts of a left steel plate and the left comb teeth can be enhanced by using a first reinforcing rib; and the strength of the connecting parts of a right steel plate and the right comb teeth can be enhanced by using a second reinforcing rib; and therefore, the comb teeth are prevented from being deformed under pressing of a vehicle when the vehicle passes through the left comb teeth and the right comb teeth. By arranging a reinforcing frame in the elastic cushion block, the strength of the elastic cushion block can be enhanced, and the elastic cushion block can be prevented from being damaged due to stress.

Description

technical field [0001] The invention relates to a road bridge expansion joint, in particular to a road bridge expansion joint structure. Background technique [0002] Bridge expansion joints refer to expansion joints usually set between two girder ends, between girder ends and abutments, or at the hinged position of the bridge in order to meet the deformation requirements of the bridge deck. Existing comb-toothed expansion joints are widely used due to their good expansion and contraction effect, but the drainage efficiency of comb-toothed expansion joints is low. The increased traffic volume, the increasing number of heavy vehicles and overweight vehicles crossing the bridge, and human accidents also increase the probability of expansion joint damage. Once the expansion joint is damaged, it will not only make passers-by feel uncomfortable and lack a sense of security, but also the impact of the vehicle on the upper structure due to its damage will not only deteriorate the ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of low drainage efficiency and short service life of existing road and bridge expansion joints, and provide a road and bridge expansion joint structure to solve the above problems

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