| Steel—concrete composite beam is a kind of modern beams which induces to steel and reinforcement concrete slab composite with shear connectors to work together. The outstanding pressure properties of concrete and the superior tension properties of steel can be fully used by this structure so that the properties of materials can be fully used. This structure has the advantages of steel and concrete.lt is clear that by forming strength seed and concrete composite beam with shear connectors the the properties of material can be further developed,that is, not only the shortcoming of evidence creep and absent ductility of concrete can be conquered, but also the advantage of superior endurance of concrete can be obviously used. Therefore, the work behaviors of composite beam can be able to be better, that is, weight of the component is descanted, dimension of the component is reduced, and the structure can be adapted to the development of large span, weight loads and lofty modern project structure, and the requirement of subjecting to bad environment.As one of the general structural analysis methods, the finite element method can imitate performance of the composite beams with a lot of changing influence factors, and provides lots of analysis data to found a basis for design. Based on nonlinear finite element method, the analysis of four prestressed steel—concrete composite beam is done in this paper.In this paper, the work behaviors of steel-concrete composite beam are studied by the theory analysis and finite element analysis. A simplified method for analysis of creep effects in steel-concrete simply supported composite beams is presented. The mathematical models of viscoelastic analysis are created. With ANSYS programme, in the case, which steel- concrete simply supported composite beams subjected to a pair of symmetry concentrated loads, simulation analysis is performed. Therefore, creep effects in steel—concrete simply supported composite beams can be studied...
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