Life-Cycle Seismic Fragility Assessment of Existing RC Bridges Subject to Chloride-Induced Corrosion in Marine Environment

Bridges in a marine environment have been suffering from the chloride attack for long period of time. Due to fact that different sections piers may be exposed conditionals, chloride-induced corrosion not only affects scale deterioration process but also significantly modifies over time damage propagation mechanisms and seismic distribution. In order investigate existing RC bridges subject spatial environment, Duracrete model is applied determine initiation reinforcing steels under exposure conditionals degradation models steels, confined concrete, unconfined concrete are obtained based on previous investigation. According fragility assessment method, approach present. Moreover, case study bridge two kinds water regions investigated influence other components. The results show result section at low level becoming more vulnerable than adjacent alteration distribution piers. pier will increase probability itself, whereas it reduction amplify effect. alter yield sequence cross section, then performance A method evolution corroded proposed last. From result, longitudinal direction depends relationship between height submerged zone. piers, zone, tidal zone common transversal direction.