ABSTRACT
Under the combined action of axial force and moment, the distribution of normal stress of wide and thin concrete deck will be very complicated. There is no explicit stipulation in the current specification about the determination of effective width coefficient of compressive top flange of the composite cable-stayed bridge’s main girder. So, in the designing process, we must use the finite element analysis of a large number of complex spatial entities to determine the coefficient of effective width of the main girder, moreover the calculation time and vigor, and to the different understanding of people, the calculation results of the modeling analysis reflect great discrete. The determining method of the deck of composite cable-stayed bridge’s effective width coefficient has been plagued by designers, which became an urgent problem to be solved in composite cable-stayed bridge design process.
