Highway bridge expansion joint device capable of keeping traffic after earthquake

The invention relates to a highway bridge expansion joint device capable of keeping traffic after an earthquake, and belongs to the technical field of bridge expansion joint devices. The expansion joint device comprises a supporting system, a corrugated beam system and an anchoring system, and a corrugated beam is mainly used for replacing a plurality of profile steel longitudinal beams in a conventional large-displacement mode expansion joint device. The corrugated beam is formed by bending a steel plate for multiple times and is a whole, the corrugated beam cannot topple and slip similar to a profile steel longitudinal beam in an earthquake, rapid repair after the earthquake is facilitated, and it is guaranteed that a road is rapidly unblocked. The corrugated beam is convenient to manufacture and install, and after the corrugated beam is covered with a rubber cover plate or the top of the groove in the corrugated beam is filled with an elastic body, a waterproof system comprising a sealing rubber strip in a