| Abstract | An approach is presented for displacement-based analysis of reinforced concrete columns based on principles of axial-shearflexure interaction. Shear behavior is modeled by applying the modified compression field theory, and flexure behavior is modeled by employing the conventional section analysis. The mechanisms of shear and flexure are coupled as springs in series, considering axial deformation interaction and concrete strength degradation, and satisfying compatibility and equilibrium relationships. The proposed approach is simplified to enable modeling a reinforced concrete column using a single section analysis with a single shear model for the entire element. The simplified approach is employed for displacement-based analysis of shear- and flexure-dominated reinforced concrete columns previously tested. Analyses are also performed for reinforced concrete columns tested by other authors. The analytical results, such as ultimate lateral loads and drifts as well as post-peak responses, are compared with the experimental data and consistent greements are achieved. |
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