Life-cycle seismic risk assessment of reinforced concrete structures exposed to corrosion

The paper presents a methodology for life-cycle seismic risk assessment of reinforced concrete structures under chloride-induced corrosion. The time-variant seismic capacity associated to the attainment of limit states is computed by means of incremental nonlinear dynamic analysis considering the probabilistic modeling of the uncertainties involved in the problem. The seismic risk is evaluated by means of the mean annual frequency of exceedance of the limit states and the corresponding expected annual loss. The proposed approach is applied to seismic risk assessment of a reinforced concrete bridge exposed to corrosion considering different seismic hazard scenarios.