T-shaped plate purlin segment prefabricated unit based on steel trusses and hybrid bridge deck slabs

The utility model discloses a T-shaped plate purlin segment prefabricated unit based on a steel truss and hybrid bridge deck slabs. The T-shaped plate purlin segment prefabricated unit comprises lower load-carrying structures and the hybrid bridge deck slabs distributed on the lower load-carrying structures, wherein the hybrid bridge deck slabs and the lower load-carrying structures are both arranged in the longitudinal direction of a bridge. Each lower load-carrying structure is composed of an upper chord, a lower chord and web members. Each upper chord comprises a first rectangular steel pipe. Each lower chord comprises a second rectangular steel pipe. Each hybrid bridge deck slab comprises a bottom supporting steel plate, a plurality of top longitudinal ribs distributed on the bottom supporting steel plate and a concrete bridge deck slab body arranged on the bottom supporting steel plate in a poured mode, wherein the top longitudinal ribs are arranged inside the concrete bridge deck slab body in a poured mode, the top longitudinal ribs are long-strip-shaped steel plates, a plurality of through holes are formed in the middle of each long-strip-shaped steel plate, the bottom supporting steel plate is a rectangular supporting steel plate formed by connecting a left extension steel plate, a right extension steel plate and the corresponding first rectangular steel pipe. The T-shaped plate purlin segment prefabricated unit is simple in structure, reasonable in design, easy and convenient to construct, good in overall mechanical property and capable of improving structural accuracy and construction convenience of a steel and concrete hybrid bridge.