ABSTRACT
This study is focused on the probabilistic seismic performance assessment of reinforced concrete frame structures. Four planar seven-story structures situated in areas of low and high seismicity that are under the influence of either intermediate-depth or crustal earthquakes are considered. The seismic performance is based on the results of incremental dynamic analyses using as input site-specific ground motion recordings. Fragility functions for the serviceability limit state, ultimate limit state, and collapse limit state are obtained for each individual structure, accounting for the variability of the nonlinear response. The resulting annual probabilities of exceedance of the three considered limit states are one order of magnitude larger for Bucharest as compared to Iasi, Timisoara, and Cluj. It was observed that the largest exceedance probabilities for all the three considered limit states are obtained for the structure situated at Bucharest, the site with the largest long-period spectral accelerations, while the smallest ones are derived for the structures situated at Cluj.
