ABSTRACT
The main girder of Shunde Bridge adopted hybrid beams, and the steel-concrete joining section connects the steel box girder with the PC box girder. In order to accurately simulate the real stress of the steel-concrete joining section, the refined finite element analysis of the joining section of the main girder of the hybrid girder cable-stayed bridge is carried out by using the finite element software ABAQUS. The stress distribution of each part of the composite beams, the transfer mechanism of the force, and the proportion of the force shared by steel and concrete are analyzed in detail. The results show that the proportion of the load distributed to the bearing plate is the highest, followed by the load shared by the shear studs (keys); although there is a large axial force in the steel-concrete joining sections, the steel structure and concrete structure are not prone to tensile stress under the action of the axial force; although the steel bearing plate in the combination section has a relatively high contribution in the load transfer process, the stress of the bearing plate itself is at a low level and has certain optimization space.
