ABSTRACT
Due to various sources of uncertainties, damages caused by corrosion resulted from the ingress and attacks of chloride ions; necessitate assessment of time-dependent reliability of RC Structures. Chloride-induced corrosion, degrades the mechanical properties of steel, and develops cracking in concrete, decreases bonding strength between rebar and concrete and consequently, reduces the service life of the structure. The main aim of this paper is to investigate the effects of chloride induced corrosion on seismic fragility of a typical RC highway bridge located in Iran as well as assessment of its reliability under environmental conditions complying with the Persian Gulf zone. To this end, corroded members and their nonlinear characteristics was investigated in 10-year time intervals for different stages of corrosion (i.e. initiation and propagation) using OPENSEES Software. The results indicated that, Reliability index decrease by time for each performance level.
