Performance-based comprehensive evaluation on the seismic behavior of the corroded RC column

The effect of the reinforcement corrosion on the seismic behavior of the RC column was investigated based on the regression analysis of a large test sample. According to the observed test phenomenon, the influence law of the reinforcement corrosion on the backbone curve was summarized. The index system for the seismic behavior evaluation of the corroded RC column was established and was calculated according to the collected test data. The influence of the reinforcement corrosion ratio on the bearing capacity, stiffness, deformation capacity as well as energy dissipation capacity was analyzed respectively, and the attenuation models for the seismic behavior evaluation of the corroded RC column was established. The result shows the reinforcement corrosion ration has different effect on the seismic index system, and the degrading stiffness is most sensitive to corrosion ratio. This research is helpful for the improvement of the relative design codes.