Study of seismic performance of frame structures of steel reinforced concrete beams and angle-steel concrete columns

This paper presents an experimental and theoretical study of two frame structures of steel reinforced concrete beams and angle-steel concrete columns under horizontal low cyclic loading, respectively. Based on the test results, the hysteretic curves for the horizontal load-displacement and the failure modes are obtained. The hysteretic behavior, skeleton curve, stiffness degradation, energy dissipation, and residual deformation of the two frames are studied. The nonlinear structural analysis program OpenSees is employed to calculate the hysteretic curves. The influences of slenderness ratio, axial compression ratio, steel ratio of column, cross-section moment resistance of the beam, ratio of steel bars and prestressing level on the skeleton curves are studied. The results indicate that this type of frame performs well if under earthquake.