Expansion joint structure applied to bridge

The utility model relates to an expansion joint structure applied to a bridge, and belongs to the technical field of bridge engineering, the expansion joint structure comprises stairway bridge abutments, the adjacent stairway bridge abutments are spaced to form an expansion joint, an elastic connecting piece used for connecting the adjacent stairway bridge abutments is arranged in the expansion joint, and the elastic connecting piece comprises a U-shaped water stop belt and a bearing plate; the U-shaped water stop belt is inserted in the expansion joint in a matched mode, the bearing plate abuts against the top face of the adjacent stairway bridge abutment, an embedded part is arranged in the stairway bridge abutment and comprises a fixing part and a clamping part, the fixing part is connected with the stairway bridge abutment, a clamping groove matched with the clamping part is formed in the U-shaped water stop belt, and the clamping part is installed in the clamping groove in a clamped mode. In order to pro