Seismic damage assessment using synthetic ground motions: a case study for Erzincan

2015-10-14
Estimation of seismic losses is a fundamental step for risk mitigation decision-making in urban regions. As the study region, Erzincan, a city on the eastern part of Turkey is selected which is located in the conjunction of three active faults as right lateral North Anatolian Fault, left lateral North East Anatolian Fault and left lateral Ovacik fault. Erzincan city center is in a pull-apart basin underlain by soft sediments that has experienced devastating earthquakes such as the 27 December 1939 (Ms8.0) and the 13 March 1992 (Mw=6.6) events, resulting in extensive amount of economic losses, physical damage, and large number of fatalities. This is due to not only the high seismicity of the area but also as a result of the seismic vulnerability of the constructed environment. Therefore, in this study, the seismic damage estimation of Erzincan is carried out considering both regional seismicity and local building information. For this purpose, first, ground motion records are selected from a set of scenario events generated with the stochastic finite fault methodology using regional seismicity parameters. Then, existing building stock are classified into specified groups that are represented with equivalent single-degree-of-freedom systems where the inelastic dynamic structural characteristics of the models are investigated. The response statistics of the structures are evaluated through non-linear time history analysis. Fragility Curves for the classified structural types are derived and discussed. Finally, the estimated damage is compared with the observed damage during the 1992 Erzincan earthquake. The results seem to have a reasonable match in between.

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Citation Formats
S. Karim Zadeh Naghshineh, A. Askan Gündoğan, M. A. Erberik, and A. Yakut, “Seismic damage assessment using synthetic ground motions: a case study for Erzincan,” presented at the 3rd Turkish Conference on Earthquake Engineering and Seismology (14 - 16 Ekim 2015), İzmir, Türkiye, 2015, Accessed: 00, 2021. [Online]. Available: http://www.tdmd.org.tr/TR/Genel/pdf2015/TDMSK_014.pdf.