Concrete girder structure for improving bearing capacity of factory building

The utility model discloses a concrete main beam structure for improving the bearing capacity of a plant, which comprises an upper beam plate and a lower beam plate, supporting mechanisms are arranged between the upper beam plate and the lower beam plate through first connecting mechanisms, and a reinforcing mechanism is arranged between every two adjacent supporting mechanisms. The reinforcing mechanisms are connected with the upper beam plate and the lower beam plate through second connecting mechanisms, connecting grooves are symmetrically formed in the two sides of the bottom face of the upper beam plate and the two sides of the top face of the lower beam plate correspondingly, limiting grooves are formed in the upper beam plate and the lower beam plate correspondingly, and the limiting grooves communicate with the connecting grooves. The concrete main beam is simple in structure and reasonable in design, the supporting mechanism and the reinforcing mechanism are arranged between the upper beam plate and