Probabilistic seismic performance and loss assessment of a bridge-foundation-soil system

摘要: Abstract This paper presents the probabilistic seismic performance and loss assessment of an actual bridge–foundation–soil system, Fitzgerald Avenue twin bridges in Christchurch, New Zealand. A two-dimensional finite element model longitudinal direction system is modelled using advanced soil structural constitutive models. Ground motions at multiple levels intensity are selected based on hazard deaggregation site. Based rigorous examination several deterministic analyses, engineering demand parameters (EDP's), which capture global local demand, consequent damage to bridge foundation determined. structure considering both direct repair functionality consequences was performed holistically assess risk system. It found that non-horizontal stratification soils, liquefaction, soil–structure interaction had pronounced effects distribution components, north abutment piles central pier were critical systems performance. The due during significantly larger than costs, with over a 2% 50 year probability total exceeding twice book-value structure.