Dual-purpose counter-force device capable of being used for fixing expansion joint

The utility model discloses a dual-purpose counter-force device capable of being used for fixing an expansion joint. The device comprises main beams, an expansion joint and a bridge pier, the expansion joint is arranged between the two main beams, the bottom surfaces of the main beams are supported on the bridge pier, a support is arranged between the main beams and the bridge pier, the device further comprises a dual-purpose counter-force bracket and a jack, the dual-purpose counter-force bracket is installed on the bottom surfaces of the main beams and inserted into the expansion joint between the two main beams, and the jack is connected with the two main beams. A jack is installed between the dual-purpose counter-force bracket and the pier, and the telescopic direction of the jack is parallel to the main beam. The bridge expansion joint fixing device can effectively utilize the structural characteristics of an expansion joint and a lower structure of a bridge and the operation space under the bridge, can