The damage of the bridge expansion joint not only affects the driving comfort, but also causes damage to other components, bringing hidden dangers to the safety of the bridge. The rubber strip of the Expansion joint is damaged, the debris on the road falls into the Expansion joint, and the Expansion joint cannot expand freely. When the temperature changes, it will compress the beam head or platform back, and compress the beam head or platform back. Therefore, maintenance measures should be taken.

With the continuous development of transportation, the pressure of bridge maintenance is increasing. Routine maintenance and Preventive maintenance can greatly reduce the speed of expansion joint damage. The following points should be strengthened in the routine maintenance of bridge Expansion joint: