Frame beam structure

The invention provides a frame beam structure. The frame beam structure comprises a combined structure beam and a reinforced concrete beam. The reinforced concrete beams are connected to the two ends of the combined structural beam respectively, so that a frame beam structure is formed through connection. The combined structural beam is positioned in the section with the maximum sagging moment of the frame beam structure; the connecting area of the reinforced concrete beam and the composite structural beam is located at the smallest section of the bending moment of the frame beam structure; the reinforced concrete beams at the two ends of the combined structural beam are used for bearing hogging moment and shearing force of the root of the frame beam structure. According to the frame beam structure provided by the invention, the advantages of a combined structure can be fully played, and meanwhile, the disadvantages of complex stress, difficult construction and the like of the combined structure during beam-c