Life-Cycle Cost Assessment Using the Power Spectral Density Function in a Coastal Concrete Bridge

Recently, the repair and maintenance of structures has been necessary to prevent these structures’ sudden collapse human financial damage. A natural factor in marine environments that destroys reduces their life is presence chloride ions. So regular health monitoring concrete coastal buildings for on-time essential. This study investigates performance power spectral density (PSD) method as a non-destructive damage-detection monitor location amount damage caused by ions during structure’s using different approaches according life-cycle assessment (LCA) cost (LCCA). In this regard, corrosion dependent on zone distance from seawater was first calculated obtain service each part bridge conventional method. Based rebar year, next stage forecasted bridge’s deterioration. The PSD monitored annual loss reinforcement cross-sectional area, changes dynamic characteristics such stiffness mass, sensitivity equations linear-least-squares algorithm. Finally, quality year until end life, LCC costs were compared with results showed strategy very effective at lowering optimizing corrosion.