Waterproof bridge expansion joint

The waterproof bridge expansion joint comprises steel plates, elastic arc plates, clamping grooves and heat exchange plates, two side plates are fixedly installed at the bottom ends of the opposite faces of the two steel plates, the clamping grooves are fixedly installed on the opposite faces of the two side plates in a staggered and uniform distribution mode, the elastic arc plates are movably installed on the inner walls of the clamping grooves, and the heat exchange plates are fixedly installed on the two side plates. The other end of the elastic arc plate is fixedly installed on the side face of the side plate. Dust can be prevented from entering the position between the two steel plates through the rubber plate installed between the two toothed plates, the two sets of elastic arc plates installed between the two side plates can further improve the dustproof and waterproof performance without hindering the telescopic performance, in cold weather, the surfaces of the elastic arc plates are frozen, and ther