Browsing by Author "Schwarz, Jochen"

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Citation Count: Abrahamczyk, L...et.al., "Seismic Risk Assessment and Mitigation in the Antakya-Maras Region (SERAMAR): Empirical Studies on the Basis of EMS-98" Eartquake Spectra, Vol.29, No.3, pp.683-704, (2013.
Seismic Risk Assessment and Mitigation in the Antakya-Maras Region (SERAMAR): Empirical Studies on the Basis of EMS-98
(Earthquake Engineering Research INST., 2013) Abrahamczyk, Lars; Schwarz, Jochen; Langhammer, Tobias; Geneş, Mehmet C.; Bikçe, Murat; Kaçın, Selçuk; Gülkan, Polat
The main objective of the SERAMAR project has been to utilize current tools for earthquake risk assessment and to establish a unique partnership between universities, professional associations, and local governments, which might serve as a model for similar future activities in Turkey and adjacent areas. In order to reach this goal, a thorough microzonation survey program combined with vulnerability and social preparedness studies in anticipation of a damaging seismic event were conducted. The paper is focused on activities related to surveying building stock and classifying and evaluating through the use of different levels of consideration. Empirical risk scenarios and casualty estimations are carried out for different levels of consideration under scenario earthquakes similar in size to historic events. Preliminary findings of the pilot phase are reported in terms of credible building performance and casualty estimates. For empirical studies, the building vulnerabilities are expressed in terms of vulnerability classes of EMS-98.
Citation Count: Lang, D.H., Schwarz, J., Gülkan, P. (2011). Site-structure resonance as a proxy for structural damage. Earthquake Spectra, 27(4), 1105-1125. http://dx.doi.org/10.1193/1.3651403
Site-structure resonance as a proxy for structural damage
(Earthquake Engineering Research Inst., 2011) Lang, Dominik H.; Schwarz, Jochen; Gülkan, Polat; 5743
Since 1992, the reconnaissance teams of the German Task Force for Earthquakes have undertaken numerous field missions to disaster areas after strong earthquakes worldwide. During these missions, a unique database of damage cases has been collected, which serves as the basis for examining whether site-structure resonance effects contribute to building damage. The selected buildings that partly experienced slight to moderate damage during a recent major event have been experimentally tested in order to identify their structural parameters and to allow a calibration of the structural building models. In addition, instrumental noise recordings were made directly at the building sites to derive the ranges of predominant site periods. By correlating the ranges of predominant site periods with the building's capacity curves, representing the inelastic displacement behavior under lateral effects, a quick survey procedure has been developed to estimate the impact of agreements between periods of the site and the structure contributing to structural earthquake damage