Steel-concrete combined section structure of hybrid beam of cable-stayed bridge and preparation method of steel-concrete combined section structure

The invention provides a cable-stayed bridge hybrid beam steel-concrete combined section structure and a preparation method, and relates to the technical field of bridge engineering.The steel-concrete combined section structure comprises a top plate, a bottom plate is arranged below the top plate, a rear bearing plate is arranged between the top plate and the bottom plate, the upper end of the rear bearing plate is connected with the lower surface of the top plate, and the lower end of the rear bearing plate is connected with the upper surface of the bottom plate; the rear bearing plate divides the space between the top plate and the bottom plate into a combination section and a transition section, the thickness of the rear bearing plate is a preset thickness, and the preset thickness of the rear bearing plate is a calculated value obtained by dividing the product of the allowable axial stress of the top plate and the actual thickness of the top plate by the allowable shear stress of the bearing plate. Accord