Structural Evaluation of the February 6, 2023 Türkiye Earthquakes: Comparison of Design Codes and Recorded Seismic Demands

Öz

Türkiye witnessed devastating earthquakes on February 6, 2023, causing widespread destruction across a wide region. In this study, the seismic impact of these events is evaluated from a structural design perspective. Specifically, the recorded Peak Ground Acceleration (PGA) values and response spectra are presented together with the elastic design acceleration parameters and design spectra prescribed in historical and current building codes. The results revealed that the ground motions experienced in the region may correspond to the highest acceleration values ever recorded. Results show that these findings may contain valuable information for refining Probabilistic Seismic Hazard Analysis (PSHA) and Ground Motion Prediction Equations (GMPEs). Since these methods rely heavily on historical seismicity and empirical strong motion data, the documentation of such extreme intensities provides a critical basis for recalibrating future hazard assessments and revising structural design parameters specified in building regulations.

Anahtar Kelimeler

• Earthquake
• equivalent earthquake load
• earthquake spectra
• RC residential buildings
• earthquake code

Destekleyen Kurum

The author has received no financial support for the research, authorship or publication of this study.

Etik Beyan

This study does not require ethics committee approval or any special permission.

6 Şubat 2023 Türkiye Depremlerinin Yapısal Değerlendirmesi: Tasarım Yönetmelikleri ile Kaydedilen Sismik Taleplerin Karşılaştırılması

Öz

Türkiye, 6 Şubat 2023 tarihinde geniş bir bölgede yaygın yapısal hasarlara neden olan yıkıcı depremlere sahne olmuştur. Bu çalışmada, söz konusu olayların sismik etkileri yapısal tasarım perspektifinden değerlendirilmiştir. Özellikle, kaydedilen En Büyük Yer İvmesi (PGA) değerleri ve tepki spektrumları; geçmiş ve yürürlükteki bina yönetmeliklerinde öngörülen elastik tasarım ivme parametreleri ve tasarım spektrumları ile birlikte sunulmuştur. Sonuçlar, bölgede yaşanan yer hareketlerinde oluşan ivmelerin, bugüne kadar kaydedilen en yüksek ivme değerlerine karşılık gelebileceğini ortaya koymuştur. Elde edilen bu bulgular, Olasılıksal Sismik Tehlike Analizi (PSHA) ve Yer Hareketi Tahmin Denklemlerinin (GMPE) iyileştirilmesi adına değerli bilgiler içermektedir. Bu yöntemler büyük ölçüde tarihsel sismisiteye ve ampirik yer hareketi verilerine dayandığından; bu denli sıra dışı düzeydeki yer hareketlerinin belgelenmesi, gelecekteki tehlike değerlendirmelerinin yeniden kalibre edilmesi ve bina yönetmeliklerinde belirtilen yapısal tasarım parametrelerinin revize edilmesi için kritik bir temel oluşturmaktadır.

Anahtar Kelimeler

• Deprem
• eşdeğer deprem yükü
• deprem spektrumları
• BA konut binaları
• deprem yönetmeliği

Kaynakça

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