Investigation of Shear Strength and Deformation Capacity Models of Reinforced Concrete Columns

Abstract

At the pre-collapse seismic performance level, there is a need to model and estimate the decrease in the lateral load and axial load carrying capacities of the shear-sensitive reinforced concrete columns the effects of such behavior on the entire structure. In order to investigate the shear strength and deformation capacity behaviors, reinforced concrete circular column models with different concrete compressive strength, axial load level and spiral reinforcement ratios were designed. The shear behavior and deformation capacity of the designed reinforced concrete columns were investigated according to the models proposed by ASCE/SEI 41 (2017) and the researchers. According to the characteristic values obtained from moment-curvature relations of reinforced concrete columns, elastic, plastic and total displacement values were calculated and the displacement ductility relations were examined. It is seen that the shear strength obtained from the analysis for reinforced concrete columns is affected by the axial load level, concrete compressive strength, spiral reinforcement ratio and displacement ductility values. © 2022 Turk Deprem Arastirma Dergisi. All rights reserved.