SEISMIC RELIABILITY ANALYSIS OF REINFORCED CONCRETE FRAMED BUILDINGS ATTACKED BY CHLORIDE

The main purpose of this study is to propose an evaluation method that can be used for analyzing the time-dependent seismic reliability of RC buildings located in a corrosive environment with high seismic hazard. In this study, several models have been developed to investigate the deterioration induced by chloride ingress in order to estimate the initiation stage and rate of corrosion and to analyze the structural capacity of columns and beams with corroded reinforcing bars. In addition, the seismic evaluation for RC buildings was used for calculating the story shear capacity of each floor in a building with respect to the corroded member. In this study, we focused on a particular type of buildings - the framed structure. In the simulation of earthquakes that may affect the concerned building, the hazard curve of the story shear demand for each floor obtained from the seismic hazard analysis was adopted; consequently, a Monte Carlo simulation was carried out for estimating the annual failure probability and seismic reliability index of the concerned building in terms of the shear capacity of each floor. Using the deterioration model caused by chloride ingress, we could build a time dependent seismic reliability function.