Abstract
Incremental dynamic analyses (IDA) of two dual RC structures (six and twelve stories in height), designed according to the provisions of relevant earthquake resistant design codes in force in Romania, are performed in order to derive analytical seismic fragility functions. The horizontal layout of the two structures is similar with five spans of 8.00 m in both orthogonal directions. In order to perform the nonlinear time history analyses (NTHAs) required by IDA method, the two structures are modelled with STERA 3D ver. 5.8. The hysteretic model employed in the NTHAs is a trilinear degrading model based on the Takeda model. The NTHAs are performed using 75 horizontal components of site-dependent simulated accelerograms that are randomly selected from a larger set developed for the INCERC site in Bucharest; the site is characterized by predominant long-periods of vibration of soil in strong earthquakes and the simulated accelerograms are reproducing this trend. The analytical fragility functions are obtained with the procedure given in Porter et al. (Earthquake Spectra 23(2):471–489, 2007) using the results of NTHAs.
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Acknowledgements
Funding for this research was provided within BIGSEES Project by the Romanian Ministry of National Education and Scientific Research under the Grant Number 72/2012. This support is gratefully acknowledged.
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Olteanu, P., Coliba, V., Vacareanu, R., Pavel, F., Ciuiu, D. (2016). Analytical Seismic Fragility Functions for Dual RC Structures in Bucharest. In: Vacareanu, R., Ionescu, C. (eds) The 1940 Vrancea Earthquake. Issues, Insights and Lessons Learnt. Springer Natural Hazards. Springer, Cham. https://doi.org/10.1007/978-3-319-29844-3_33
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DOI: https://doi.org/10.1007/978-3-319-29844-3_33
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