Formwork-free steel-concrete composite bridge wet joint structure

The utility model discloses a formwork-free wet joint structure of a steel-concrete combined bridge. The wet joint structure is composed of a prefabricated bridge deck slab, pre-buried U-shaped steel bars, longitudinal common steel bars and cast-in-place concrete. When the prefabricated bridge deck is prefabricated in a factory, bottom supports are arranged along a joint area, U-shaped steel bars are pre-buried in the prefabricated bridge deck and stretch out of the joint area from the end of the bridge deck to an adjacent prefabricated slab, the bottom supports in the joint area are in butt joint, the U-shaped steel bars are staggered and mutually inserted to form a wet joint steel bar framework, an annular area is formed in space, and longitudinal common steel bars penetrate into the annular area to be bound. And the bottom support serves as a formwork to pour concrete, and a wet joint structure is formed through curing. Compared with the traditional wet joint connection, the wet joint structure provided by