Steel-concrete supporting structure for transforming large-size hole of public building

The utility model discloses a reinforced concrete supporting structure for transforming a large-size hole of a public building, and relates to the technical field of reinforced concrete structures. Supporting block bodies are installed at the upper end of the longitudinal beam body, the bottoms of the two ends of the assembly type cross beam body are connected with the two supporting block bodies respectively, a steel-concrete supporting body is arranged at the upper end of the assembly type cross beam body, the bottoms of the two sides of the assembly type cross beam body are connected with one end of a reinforcing rod mechanism, and the other end of the reinforcing rod mechanism is connected with the side wall of the longitudinal beam body. The supporting mechanism composed of the longitudinal beams and the transverse beams is used for supporting the original transverse beams, the bearing strength of the transverse beams and the longitudinal beams can be improved, meanwhile, pouring is achieved through the