Abstract
The strength analysis of steel-concrete composite beams in combined bending and shear is evaluated. The cross-sectional area of the beam element was modified to make it equivalent in both strength and stiffness to the actual stud shear connectors in the composite beam. The 3D beam elements were used in the finite-element model to simulate the discrete behavior of stud shear connectors in composite beams. It was observed that the stiffness of the shear connection modeled using finite elements was almost the same as the stiffness of the shear connection in the real beam. The ultimate strain of 0.25 was assured for structural steel in the analysis and the experimental values of the yield strength and ultimate strength were used in the analysis for the steel. The model can be used to determine the ultimate strengths of supported composite beams under combined bending and shear.
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