Investigation of the soil amplification factor in the Adapazari region

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• 作者：Seyhan Firat ; Nihat S. Isik ; Hasan Arman…
• 关键词：Adapazari ; Soil amplification ; Soil characteristics ; Site conditions ; Peak ground acceleration
• 刊名：Bulletin of Engineering Geology and the Environment
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：75
• 期：1
• 页码：141-152
• 全文大小：4,325 KB
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• 作者单位：Seyhan Firat (1)
  Nihat S. Isik (1)
  Hasan Arman (2)
  Mesut Demir (3)
  Isa Vural (4)
  
  1. Civil Engineering Department, Technology Faculty, Gazi University, Ankara, Turkey
  2. Department of Geology, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates
  3. Civil Engineering Department, Engineering Faculty, Sakarya University, Sakarya, Turkey
  4. Civil Engineering Department, Technology Faculty, Sakarya University, Sakarya, Turkey
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Applied Geosciences
  Structural Foundations and Hydraulic Engineering
  Geoecology and Natural Processes
  Nature Conservation
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1435-9537

文摘

Turkey is located on the highly active Eurasian plate. A very active strike slip fault, the North Anatolian Fault Zone (NAFZ), crosses Turkey from east to west; earthquakes occurred on this fault on August 17, 1999 (Kocaeli) and November 12, 1999 (Düzce). Regional geology and subsoil conditions can significantly change the characteristics of ground motion. For this reason, determining soil amplification during an earthquake, especially for soft soils, is a very important topic for researchers. In this study, one dimensional ground response analyses were performed for selected Adapazari sites using the August 17, 1999 Kocaeli earthquake strong ground motion record with SHAKE2000 software. Soil characteristics and depth to engineering bedrock at the selected sites are different and the observed level of structural damage at these sites during the Kocaeli earthquake was also different. Calculated soil surface response spectrums at these sites were compared with the recommended design spectra of the Turkish Earthquake Code and the Eurocode 8. According to one dimensional ground response analyses, the calculated response spectra of the selected sites exceed the recommended design spectra of the Turkish Earthquake Code and the Eurocode 8. Calculations show that higher amplification ratios occur at higher periods due to soil behaviour. Results of this study indicate that local geological conditions may amplify ground motion at some periods and, due to this amplification, the calculated response spectra may exceed the recommended design spectra. Therefore, it is clear that local site conditions must be considered for earthquake-resistant engineering designs on soft alluvial soil deposits. Keywords Adapazari Soil amplification Soil characteristics Site conditions Peak ground acceleration