Isparta Havzasının 1D Doğrusal Olmayan Zemin Tepki Analizi Yöntemi ile Değerlendirilmesi; 1914 Burdur (Ms: 7.0) Deprem Senaryosu

Depremlerin meydana getirdiği yapı hasarlarının sadece depremin fiziksel özelliklerinden değil aynı zamanda zeminin özelliklerinede bağlı olduğu bilinmektedir. Bu durum zemin tepkisinin kuvvetli yer hareketi öncesi belirlenmesini deprem mühendisliği vesismolojinin ana hedeflerinden birisi haline getirmiştir. Bu çalışmada, belirlenen 24 noktada kayma dalgası (Vs) ve sondaj verilerikullanılarak Türkiye’nin en önemli tektonik elemanlarından birinin merkezinde yer alan Isparta ovasının zemin tepkisininöngörülmesi hedeflenmiştir. Türkiye Bina Deprem Yönetmeliği (TBDY-2018) zemin sınıflama kriterlerine göre ZC ve ZD zemingrupları karakterize edilen çalışma alanında 1 boyutlu doğrusal olmayan zemin tepki analizi yaklaşımı DEEPSOIL programıkullanılarak gerçekleştirilmiştir. Mw:6.9 İrpinia kuvvetli yer hareketi kaydı kullanılarak yapılan çözümlemede çalışma alanının enbüyük yer ivmesi (Pga) ve spektral ivme (Sa) dağılım haritası oluşturulmuştur. Çalışma alanında yüzeydeki Pga değerleri 0.28-0.41g aralığında, maksimum Sa değerleri ise 0.77-1.82 g aralığında dağılım gösterdiği tespit edilmiştir. Ayrıca havza içerisinde birbirinedik iki kesit üzerinde Pga ve Vs30 arasındaki uyum irdelenmiştir. Elde edilen sonuçlar şehir merkezi ve yeni yapılaşma alanlarınınyoğun olduğu Çünür bölgesinde zeminin kuvvetli yer hareketinin etkilerini önemli bir şekilde arttıracağını göstermiştir.

Assessment of Isparta Basin by Using 1D Nonlinear Site Response Analysis Approach; 1914 Burdur (Ms: 7.0) Earthquake Scenario

It was known that building damage caused by earthquakes depends not only on the physical characteristics of the earthquake but also on the characteristics of the soil. This fact has determined soil response before strong ground motion is one of the main objectives of earthquake engineering and seismology. In this study, the main objective is to predict the soil response of the Isparta basin, Isparta, located in the center of one of Turkey's most important tectonic elements. It uses shear wave velocity (Vs) and borehole data at 24 points. The soil of the study area was classified as ZC and ZD soil groups according to the Turkish Building Earthquake Code-2018 (TBEC-2018) soil classification criteria, and its 1D Nonlinear site response analysis approach was carried out using the DEEPSOIL program in the study area. In the analysis, 6.9 Mw Irpinia strong ground motion record was used and the largest peak ground acceleration (Pga) and spectral acceleration (Sa) maps of the study area were created. Pga values in the study area were determined in the range of 0.28-0.41 g and Sa values in the range of 0.77-1.82 g. In addition, the coherence between 2D sections and Pga and Vs30 was examined. The obtained results were showed that the soil would significantly increase the effects of strong ground motion in the Çünür region where the city center and new settlement areas are dense.

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Doğal Afetler ve Çevre Dergisi-Cover
  • ISSN: 2528-9640
  • Yayın Aralığı: Yılda 2 Sayı
  • Başlangıç: 2015
  • Yayıncı: Artvin Çoruh Üniversitesi Doğal Afetler Uygulama ve Araştırma Merkezi
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