Abstract
An earthquake-resistant design should include the effect of local site conditions on the seismic ground motions. In this study, ground response analyses in 22 locations around the developing town of Saruhanlı in the Aegean Region of Turkey were undertaken using SHAKE software. The ground response analyses for a typical soil profile considered various modulus reduction and damping curves including effective confining stress and a plasticity index dependent model. The confining stress-dependent soil models and shear-wave velocity profile resulted in higher amplification ratios and lower predominant periods. High acceleration ratios (>3) and lower predominant site periods were found in the eastern part of the site such that buildings of ten or more storeys would be severely damaged.
Résumé
La conception d’ouvrages résistant aux séismes devrait prendre en compte les effets de site sur le mouvement sismique. Dans cette étude, les analyses de réponse du sol en 22 endroits autour de la ville en développement de Saruhanlı, dans la région égéenne de la Turquie, ont été réalisées en utilisant le logiciel Shake. Les analyses de réponse du sol pour un profil typique de sol ont pris en compte diverses réductions des modules de déformation et des courbes d’amortissement alimentant un modèle dépendant de la pression de confinement effective et de l’indice de plasticité. Les modèles de sols dépendant de la pression de confinement et la prise en compte de profils de vitesse des ondes de cisaillement ont conduit à mettre en évidence des rapports d’amplification élevés et des périodes principales plus faibles. Des rapports d’accélération élevés (>3) et des périodes principales plus faibles ont été obtenus dans la partie est du site, conduisant au constat que des immeubles de 10 étages ou plus seraient sérieusement endommagés.
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Acknowledgments
The author would like to express his gratitude to the Iller Bankasi staff: Ismail Bulut, Murat Saglam, Candan Uckardesler and Zafer Sal for field work information.
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Işık, N.S. Assessment of the site amplifications and predominant site periods for Saruhanlı, in an earthquake-prone region of Turkey. Bull Eng Geol Environ 69, 309–319 (2010). https://doi.org/10.1007/s10064-010-0263-5
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DOI: https://doi.org/10.1007/s10064-010-0263-5