Release time:

2023-06-27

In order to meet the requirements of deck deformation, Expansion joint are usually set between two beam ends, between beam ends and abutments, or at the hinge position of the bridge. The Expansion joint is required to be flexible, firm and reliable in two directions parallel to and perpendicular to the bridge axis, and the vehicle shall be stable without sudden jump and noise when driving; It should be able to prevent the infiltration and blockage of rainwater and garbage; Installation, inspection, maintenance, and removal of dirt should be simple and convenient. When setting Expansion joint, the railing shall be disconnected from the deck pavement. Generally speaking, the bridge Expansion joint is mainly used to prevent the pavement structure from Thermal expansion due to temperature changes. In order to reduce earthquake disasters, Expansion joint also play a role in preventing excessive displacement of beams. In short, it is a device for buffering displacement.

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