Performance-Based Seismic Fragility and Risk Assessment of Five-Span Continuous Rigid Frame Bridges

Earthquakes can cause serious damage to traffic infrastructures, among which the impact on bridge structure is most important. Therefore, in order assess bridges serviceability, it important master their mechanism and analyze its probability of occurrence under a given seismic action. Various uncertainties, like location epicentre future earthquakes magnitudes, make this task quite challenging. We are also required consider different earthquake scenarios damaged states components associated with those earthquakes. To suppress these difficulties, study proposed new method performance-based fragility risk assessment for bridges. The included three steps: (1) estimation five-span continuous rigid frame bridge, (2) hazard analysis locations (3) bridge. that considered performance uncertainty magnitudes provide valuable references seismic-resistant design multispan future.