Anti-seismic, energy-dissipation, anti-collision and waterproof expansion joint for building

The utility model relates to the technical field of building structural joints, in particular to a building anti-seismic energy-consumption anti-collision waterproof expansion joint which comprises expansion joint notches formed in the left side and the right side of the expansion joint respectively. A telescopic device and an anti-vibration device are arranged in the expansion joint notch; the expansion device comprises expansion joint deformation toothed plates, expansion joint end plates and expansion joint toothed plate connecting pieces, the expansion joint toothed plate connecting pieces are arranged at the positions, above the expansion joint notches, of the edges of the expansion joints, the expansion joint deformation toothed plates are arranged between the two expansion joint toothed plate connecting pieces, and the expansion joint end plates are arranged in the expansion joint notches. According to the utility model, the expansion device is arranged for eliminating cracks generated by thermal expan