Abstract
Currently, the transformed-section method is mainly used in the analysis of composite steel-concrete bridges. This paper presents a master-slave constraint method to investigate the time-dependent performance and construction process of composite steel-concrete bridges. The creep is considered by combining the age-adjusted effective modulus method (AEMM) and finite element analysis. Firstly, the cross-sections of composite members are separated into steel and concrete parts, and the master-slave constraints are applied between the nodes of finite elements and those of the steel and concrete parts. Then, the forces caused by creep and shrinkage of concrete parts are calculated. The final creep and shrinkage effects of composite members are obtained through finite element analysis. Based on the master-slave constraint method and Visual C++, the numerical simulation program, named CSCB, was developed for simulating the construction process and evaluate the structural response of composite steel-concrete bridges.