Anti-earthquake-displacement bridge expansion joint device

Abstract

The invention discloses an anti-earthquake-displacement bridge expansion joint device. The anti-earthquake-displacement bridge expansion joint device comprises a first movable comb plate and a second comb plate, wherein the first movable comb plate and the second comb plate are arranged on a first beam body and a second beam body which are located on the two sides of a bridge expansion joint respectively, comb teeth are arranged on the opposite ends of the first movable comb plate and the second movable comb plate respectively, the comb teeth are arranged in a crossing mode at intervals, the first movable comb plate stretches across the bridge expansion joint so that the tail ends of the comb teeth of the first movable comb can be located above the second beam body, and the first movable comb plate and the second movable comb plate are arranged on the first beam body and on the second beam body respectively in a mode that the first movable comb plate and the second movable comb plate can rotate horizontally relative to the beam bodies. Compared with the prior art, the anti-earthquake-displacement bridge expansion joint device has the advantages that rigid damage on the comb plates and on the whole bridge expansion joint device when earthquake displacement occurs can be effectively avoided, and the shock resistance of the expansion joint device is improved.

Description

technical field [0001] The invention relates to a bridge expansion joint device, in particular to a bridge expansion joint device capable of resisting earthquake displacement. Background technique [0002] Bridge expansion joints are devices installed between the two girder ends, between the girder end and the abutment, or at the hinged position of the bridge in order to meet the deformation requirements of the bridge deck. In the existing bridge expansion joint devices, whether it is a digital mode or a comb-tooth plate type, its longitudinal expansion and contraction function can meet the expansion and contraction needs of the bridge beam body, such as the Chinese invention patent with the publication number of CN1958959A "A Comb-type Bridge Expansion Joint "Device" discloses a bridge expansion joint device, which includes fixed combs and movable combs respectively arranged on the beam bodies on both sides of the bridge expansion joints, wherein the movable combs are place...

AI Technical Summary

Problems solved by technology

However, in the event of an earthquake, especially a major earthquake, there will be a lateral dislocation movement between the bridge girders, and the above-mentioned bridge expansion joint devices cannot meet the displacement needs of this dislocation movement, such as: the modular bridge expansion joint device in this Under the action of lateral dislocation movement, damage phenomena such as broken supporting beams and falling off of supports will occur. However, under the action of such lateral dislocation movement, the comb teeth and bolts are easy to break and fall off, resulting in The entire expansion joint assembly is damaged

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