Nonlinear finite element analysis of SCC filled steel tubular beams

Publisher Summary The chapter presents a nonlinear finite element analysis of steel tubular beams filled with self-compacting concrete (SCC). Constitutive models for steel, compressive concrete, and tensile concrete are carefully chosen to depict material nonlinear properties. In the initial elastic and final plastic stages, the middle span deflections calculated by finite element (FE) method are in good agreement with experiment results. While in the inelastic stage, simulated curves are higher than the experimental ones. The FE analysis gives reasonable prediction of the failure mode, compressive and tensile strains at the tube extreme fibers, and the moment capacity. Based on the study, it is found that the nonlinear finite element method can reasonably predict moment capacities, failure mode, extreme fiber strains, and deformation of the steel tubular beams filled with SCC.