Mechanism based assessment of damage-dependent fragility curves for RC building classes

摘要: Seismic fragility curves play a critical role in risk assessment because they represent the probability of attaining different damage states given ground motion intensity. However, case repeated earthquakes, seismic vulnerability buildings varies due to and this shall be properly considered for realistic estimate evolving during sequence. This paper presents methodology damage-dependent existing reinforced concrete (RC) building classes. The derivation is based on hybrid method that combines observational “empirical” mechanical buildings’ residual capacity (REC), measure capacity, which may reduced damage. A mechanism procedure assess REC, its variation increasing ductility demand, presented. Then, order able apply such RC classes, simulated design implemented allows automatic elements dimensions reinforcement, as well characterization nonlinear model needed analysis. Applying Monte Carlo simulation geometric, structural parameters, from depends on, are varied according representative distributions populations models generated analyzed with approach. prone first storey applied classes L’Aquila.