Expansion device of bridge steel cover plate

Abstract

Disclosed is an expansion device of a bridge steel cover plate. A plurality of pairs of positioning anchor plates are arranged on the two sides of an expansion joint and are all welded with anchor steel bars. A first bearing beam and a second bearing beam are arranged on the two sides of the expansion joint on a bridge abutment or a beam body respectively and are welded and fixedly connected with one ends of the positioning anchor plates, the top end of the first bearing beam and the bottom face of a cross-joint cover plate are welded and fixed, and the top of the second bearing beam and the bottom of the cross-joint cover plate are in movable contact. A deformable steel elastic body is arranged between the first bearing beam and the second bearing beam in the length direction of a bridge, and the two ends of the steel elastic body in the length direction of the bridge are fixedly connected with the first bearing beam and the second bearing beam respectively. Under the vehicle-mounted impact, the cross-joint cover plate is visual in structural stress, simple, safe and reasonable, the vehicle jumping phenomenon is obviously reduced compared with an existing expansion device, and it is guaranteed that the expansion device can be safely used under various deformation functions. Transmitted force between beam bodies at a beam joint is small, the steel elastic body provides support for a waterproof structure, and mounting is simple, quick and convenient.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a connection device for bridge expansion joints. Background technique [0002] In the prior art, expansion joints of bridges are equipped with expansion devices, and these expansion devices have some defects to varying degrees. At present, a large number of Maole expansion devices are used in the joints, which are easy to accumulate dust and stones in the joints, and the car jumps obviously, and is waterproof. The rubber is easy to detach and leak water, and the concrete on both sides of the beam joint is easily damaged by the impact of the vehicle due to jumping. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a bridge steel cover plate telescopic device under the premise of ensuring the telescopic performance of the telescopic device, so as to solve the problems of vehicle jumping and waterproofing of the telescop...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, expansion joints of bridges are equipped with expansion devices, and these expansion devices have some defects to varying degrees. At present, a large number of Maole expansion devices are used in the joints, which are easy to accumulate dust and stones in the joints, and the car jumps obviously, and is waterproof. The rubber is easy to detach and leak water, and the concrete on both sides of the beam joint is easily damaged by the impact of the vehicle due to jumping

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