Bridge expansion joint

Abstract

The invention discloses a bridge expansion joint, which comprises a support structure, a fixing structure, an elastic steel plate and an expansion joint cover plate. The support structure comprises support boxes, side steel beams and a center beam, the side steel beams are located on the left and right sides of the center beam, and the support boxes are located at the bottom ends of the side steelbeams. The fixing structure includes anchor plates and anchor rings. The anchor plates are disposed on the outer side of the side steel beams, and the anchor rings are disposed on the anchor plates.The elastic steel plate in the form of folded waves, the fold is parallel to the center beam, the folding angle is an acute angle, the two ends of the elastic steel plate are vertical plates, and thevertical plates at the both ends are respectively connected with the side steel beams and the center beam. The expansion joint cover plate has a left part and a right part, which are respectively connected with the side steel beams at the both ends, and the connection mode is hinge connection, and the expansion joint cover plate is opened or closed at the hinge position. The bridge expansion jointdoes not require the use of sealing materials, and maintenance and repair are very convenient.

Description

technical field [0001] The invention belongs to the technical field of construction of road and bridge facilities, and more specifically relates to a bridge expansion joint. Background technique [0002] Bridge expansion joints are usually set between two girder ends, between girder ends and abutments, or at the hinged position of the bridge. The purpose of setting expansion joints is to adjust the gap between the superstructure caused by vehicle loads and bridge building materials or temperature changes. displacement and connection. Expansion joints should be free to expand and contract, firm and reliable, and vehicles should run smoothly without sudden jumps and noises; they should be able to prevent blockage; installation, inspection, maintenance, and removal of dirt should be simple and convenient. Where expansion joints are set, railings and bridge deck pavement must be disconnected. The bridge expansion joints currently used usually need to be sealed with sealing mat...

AI Technical Summary

Problems solved by technology

The bridge expansion joints currently used usually need to be sealed with sealing materials during installation. Since the sealing materials are harmful to the human body, they will damage the health of the construction workers and pollute the environment. things are troublesome

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