Fragility Curves for Multi-Storey Structures

Earthquakes in many areas have resulted III a great terrorbecause of their huge destructive force causing loss in human life,structures ·and everything that man owns.Great effort has been given in reasonably estimation, predictionsand mitigation of the risks associated with these potential losses.There is a lot of associated uncertainties because of the risk ofbeing affected by a strong earthquake. Accordingly, it is importantto study the vulnerability of structures from potential earthquakes.In Egypt, most of residential buildings are multistorey reinforcedconcrete structures. Seismic vulnerability of multi-storeyreinforced concrete structures in Egypt has been studied in thisresearch. Incremental dynamic analysis ( IDA) are performed onfive RlC residential buildings; 2,4,6,8 and 10-storey. All buildingsare designed according to the Egyptian code (2008) under theeffect of dead, live and seismic loads in zone3 with designacceleration of 0.15g. Nonlinear time historey analysis areperformed on all models under the effect of twelve earthquakesusing SeismoStruct software in 3-Dimensions. IDA curves areplotted to investigate the response of these buildings under theapplied earthquakes considering four damage limits; fullyoperational, operational, life safety, and near collapse. Fragilitycurves are developed and disscussed in details.