The Evaluation of Earthquake Risk of Existing Buildings in Başakşehir District of Istanbul Province
Öz
In order to ensure public safety and sustainable urban growth, it is imperative that existing buildings in new residential districts have their seismic risk evaluated. Başakşehir district is a place where new settlements are significantly dense in Istanbul. In this study, two pilot regions were selected within the district and the entire district was subjected to scenario earthquake hazard and damage estimation analysis. Four historical earthquakes and one instrumental earthquake that affected the Marmara region were chosen as scenario earthquakes and predicted earthquake damage analyses were conducted as part of the study. The initial step involved compiling the structure inventory data in the Başakşehir pilot districts. Both the building inventory of the pilot regions and the building inventory of the Başakşehir district were updated through field research for this procedure and the acquisition of building licenses from pertinent institutions and organizations. The building inventory obtained in the second stage was transferred to the geographic information system program QGİS. After this procedure, the Earthquake Loss Estimation Routine (ELER) program, which carries out earthquake damage analysis, was used to compute the estimated earthquake damage analyses for the various regions. The distribution of damage that occurred in the research regions was transferred at the final stage as a consequence of the analysis that was conducted, and assessments were produced using comparisons between the regions. Consequently, it was shown that the new settlements performed better for earthquake scenarios. This study can contribute to additional scientific studies that will estimate post-earthquake damage to existing structures in other districts of Istanbul.
Anahtar Kelimeler
Earthquake damage analysis, Earthquake loss estimation routine (ELER), HAZUS classification, Seismic risk assessment
Kaynakça
- Ambraseys, N. N., & Jackson, J. A. (1998). Faulting associated with historical and recent earthquakes in the Eastern Mediterranean region. Geophysical Journal International, 133(2), 390-406.
- Askan, A, Ugurhan, B., Ün, E.M., Erberik, M.A., (2011, Ekim) Batı Marmara Bölgesi İçin Alternatif Yöntemlerle Deprem Hasar ve Kayıp Tahmini Çalışmaları. 1. Türkiye Deprem Mühendisliği ve Sismoloji Konferansı, Ankara, Türkiye.
- Barış, Ş., Zülfikar, A. C., Korkmaz, M., Tunç, S. (2023). Akıllı Şehirlerde Afet Riski Azaltılması Uygulamaları. Şura Akademi, (2), 27-41.
- Boore, D. M., Joyner, W. B., and Fumal, T. E. (1997). Equations for estimating horizontal response spectra and peak acceleration from western North American earthquakes: A summary of recent work. Seismological Research Letters, 68(1), 128-153.
- Chiou, B.S.J. and Youngs, R.R. (2008). An NGA Model for the Average Horizontal Component of Peak Ground Motion and Response Spectra. Earthquake Spectra, 24, 173-215. https://doi.org/10.1193/1.2894832.
- ELER, (2010) Deprem Kayıp Tahminleri Yazılımı, Teknik Kılavuz. Kandilli Rasathanesi Deprem Araştırma Enstitüsü, Boğaziçi Üniversitesi, Türkiye.
- Erberik, M. A., and Elnashai, A. S. (2004). Fragility analysis of flat-slab structures. Engineering Structures, 26(7), 937-948.
- Ergen, V., (2017). Yeni Yerleşim Bölgelerindeki Mevcut Yapıların Deprem Riskinin Değerlendirilmesi. Yüksek Lisans Tezi, Gebze Teknik Üniversitesi, Fen Bilimleri Enstitüsü, Kocaeli.
- FEMA, (2005). Improvement of Nonlinear Static Seismic Analysis Procedures. FEMA 440. Federal Emergency Management Agency 440: 392, Washington DC, USA.
- FEMA, (2012). Multi-Hazard Loss Estimation Methodology, Earthquake Model: Hazus-MH 2.1 User Manual. 863, USA.
kapsamında lisanslanmıştır.