Comparative Numerical Research on the Seismic Behavior of RC Frames Using Normal and High-Strength Reinforcement

This paper presents comparative numerical research on the overall seismic behavior of rc frames with different types of rebar (normal versus high-strength rebar). a nonlinear numerical model is developed and is validated using experimental results. comparing the numerical and experimental behaviors shows that the developed model is capable of describing the hysteretic behavior and development of plastic hinges in experimental rc frames with longitudinal steel bars of various strengths. the validated model is then used,considering the influences of axial load ratios and volumetric ratio of longitudinal rebar to investigate the effects of reinforcement strength on the overall seismic behavior of rc frames. the simulation results indicate that utilizing high-strength reinforcement can improve structural resilience,reduce residual deformation,and achieve a favorable distribution pattern of plastic hinges on beams and columns. © 2016,iran university of science and technology.