Abstract
This paper deals with the fa-Ike deformation analysis of reinforced concrete columns subjected to cyclic lateral loading as well as constant axial loading. For the geometrical nonlinearity, the finite deformation formulation is taken into consideration under the assumption of the Bernoulli-Euler beam theory. On the other hand, for the material nonlinearity, the sophisticated constitutive models, which are the two-surface model for steel and strain-softening model for concrete, are adopted into the finite element program FEAP. The numerical results have been compared with the experimental data with respect to cyclic deformation behavior of RC column including the post-peak behavior. An important remark is obtained from the present study that strain-softening type of constitutive model should be carefully used in the finite element analysis. At the final stage of present paper, modeling the buckling of steel bar is taken into consideration in the finite element analyses.
