Journals / Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi / 2021 / Cilt: 23 - Sayı: 68

Attenuation Relationship for Peak Horizontal Acceleration from Ground and Earthquake Parameters

Zemin ve Deprem Parametrelerinden İvme Azalım İlişkisi

Pages
575–593
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The empirical attenuation relationship developed within the scope of the study was compared with that of other researchers in the literature and a lower RMSE error was obtained.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the value of the peak horizontal ground acceleration occurred in the earthquake and which is an important parameter for the engineering structures was estimated.
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Key Findings & Data:In this relationship, magnitude, period and source distance of the earthquake are used as earthquake parameters, and soil magnification, soil predominant period, weighted averages of P and S wave velocities for 30m depth (Vp30 and Vs30) are used as dynamic parameters of the ground.
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Conclusion & Impact:The empirical attenuation relationship developed within the scope of the study was compared with that of other researchers in the literature and a lower RMSE error was obtained.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Yatay yer ivmesi · Depremin büyüklüğü · Uzaklık

Abstract

In this study, the value of the peak horizontal ground acceleration occurred in the earthquake and which is an important parameter for the engineering structures was estimated. Most of the researchers working on the peak horizontal ground acceleration value subject used only earthquake parameters and few used ground parameters in their empirical relationships. As known, the value of the peak horizontal ground acceleration varies depending on the properties of the ground. Therefore, a new multi-parameters attenuation relationship for peak horizontal acceleration was obtained by using both the dynamic parameters of the soil and the earthquake parameters. In this relationship, magnitude, period and source distance of the earthquake are used as earthquake parameters, and soil magnification, soil predominant period, weighted averages of P and S wave velocities for 30m depth (Vp30 and Vs30) are used as dynamic parameters of the ground. In this context, the data obtained from dynamic parameters of station ground and from results of 152 earthquake records of Mw=5.3-7.1 magnitudes obtained from different stations in the world were formed as data set. The empirical attenuation relationship developed within the scope of the study was compared with that of other researchers in the literature and a lower RMSE error was obtained.

Özet

Bu çalışmada, mühendislik yapıları için önemli bir parametre olan ve depremde meydana gelen pik yatay yer ivme değeri tahmin edilmiştir. Yatay yer ivme değeri konusunda çalışan araştırmacıların çoğunluğu sadece deprem parametrelerini, çok azı ise zemin parametrelerinden bazılarını deneysel ilişkilerinde kullanmışlardır. Bilindiği üzere pik yatay yer ivme değeri yerin özelliklerine bağlı değişkenlik göstermektedir. Bu nedenle yapılan çalışmada hem zeminin dinamik parametrelerini hem de deprem parametrelerini kullanarak çok parametreli yeni bir ivme azalım ilişkisi elde edilmiştir. Bu ilişkide deprem parametreleri olarak depremin büyüklüğü, periyodu ve kaynak mesafesi ve zeminin dinamik parametreleri olarak da zeminin büyütmesi, hakim titreşim periyodu, 30m derinlik için P ve S dalga hızlarının ağırlıklı ortalamaları (Vp30 ve Vs30) kullanılmıştır. Bu kapsamda, dünyadaki farklı istasyonlardan elde edilen Mw=5.3-7.1 aralığındaki büyüklüklerde 152 adet deprem kaydının sonuçları ve istasyon yerinin dinamik parametrelerinden elde edilen verilerle veri seti oluşturulmuştur. Çalışma kapsamında geliştirilen deneysel azalım ilişkisi, literatürdeki diğer araştırmacıların deneysel ilişkileri ile karşılaştırılmış ve daha düşük RMSE hata elde edilmiştir.

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Cite This Article

UYANIK, O., SABBAĞ, N., ÇOŞKUN, O. (2021). Attenuation Relationship for Peak Horizontal Acceleration from Ground and Earthquake Parameters. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi, Cilt: 23 - Sayı: 68, 575–593. https://ajindex.com/articles/348351

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