Cyclic deterioration parameters for shear-critical RC columns

Abstract

Existing reinforced concrete (RC) columns are susceptible to shear failure, and they are also known to experience significant strength and stiffness deterioration in force-deformation response. It is important to consider cyclic deteriorations when numerically simulating the force-deformation response of shear-critical RC columns. In this paper, the calibration procedure for three deteriorations (strength, unloading stiffness, and reloading stiffness) parameters is proposed. The numerical model is verified by comparing actual and simulated force-displacement responses of ten shearcritical RC columns.