Efficient waterproof expansion joint structure for civil engineering

The utility model discloses an efficient waterproof expansion joint structure for civil engineering, which comprises a left pouring body and a right pouring body, an expansion joint is formed between the left pouring body and the right pouring body, an expansion joint mechanism is arranged between the left pouring body and the right pouring body, the expansion joint mechanism comprises an expansion joint steel plate and a reinforcing steel bar, the number of the expansion joint steel plates is two. According to the efficient waterproof expansion joint structure for civil engineering, two groups of expansion joint steel plates are arranged, and an expansion frame matched with the expansion joint steel plates for use is arranged, so that when a pouring body expands, a sealing steel plate is matched with a limiting sliding groove plate through a limiting sliding rod by utilizing the tension of a reset spring; the waterproof plate enters the connecting groove formed in the connecting plate and then is sealed thro