Spring supporting type bridge expansion joint structure

Abstract

The spring supporting type bridge expansion joint structure comprises a fixing plate, the outer end of the fixing plate is anchored to a beam body on one side of an expansion joint, and fixing comb teeth are arranged at the inner end of the fixing plate at intervals; telescopic comb teeth are arranged at the inner end of the telescopic plate at intervals, and the telescopic comb teeth and the fixed comb teeth are arranged in a staggered mode at intervals; the first telescopic unit is arranged between the outer end of the telescopic plate and the side wall of the beam body on the other side of the expansion joint; the second telescopic unit is arranged at the outer end bottom of the telescopic plate; the fixing part is arranged at the bottom of the second telescopic unit; the bottom of the second telescopic unit is fixedly connected with the top of the fixing part. The expansion joint has the advantages that horizontal deformation and angle change of the expansion joint are resisted through the first expansion unit; vertical deformation of the expansion joint is resisted through the second expansion unit; and the transverse spring and the vertical spring also have a certain rotation amount, so that the telescopic comb teeth and the fixed comb teeth cannot be bent and warped even if the automobile is rolled for a long time, and the overall service life is greatly prolonged.

Description

technical field [0001] The invention relates to the field of bridge expansion joints, in particular to a spring-supported bridge expansion joint structure. Background technique [0002] Bridge expansion joints: refers to the expansion joints usually set between two girder ends, between the girder end and abutment or at the hinged position of the bridge in order to meet the deformation requirements of the bridge deck. It is required that the expansion joints can freely expand and contract in two directions parallel to and perpendicular to the bridge axis, and are firm and reliable. The vehicles should run smoothly, without sudden jumps and noises. When the expansion joints are set, the railings and bridge deck pavement must be broken. open. [0003] The role of bridge expansion joints is to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge building materials. Once the telescopic device of the skew bridge is destroyed, it wi...

AI Technical Summary

Problems solved by technology

Once the telescopic device of the skew bridge is damaged, it will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents

[0004] Most of the current bridge expansion joints are comb-tooth plate-type expansion joint devices. The cover plates flush with the road surface are comb-tooth cover plates placed on the left and right crosswise. There is a stretching amount between the bottoms of the teeth according to the regulations. With the long-term rolling of the car, the ends of the teeth of the comb cover will be warped, and the noise will be louder when the car passes by.

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