Köprü Yapılarının Eş Zamanlı Sistem ve Girdi Tanılaması

Yıl 2019, Cilt: 1 Sayı: 2, 98 - 122, 18.12.2019

Seyed Farid Ghahari Mehmet Çelebi , Hamed Ebrahimian Barbaros Cetiner Ertugrul Taciroglu

https://doi.org/10.46464/tdad.593551

Öz

Bu makale, deprem kayıtlarını kullanarak köprü
yapılarının sistem tanılaması için yeni bir yöntem sunmaktadır. Köprüler,
genellikle yapısal elemanlarının geniş mesafelere yayılmasından ötürü, diğer
yapılara nispeten yer hareketlerinin uzamsal değişkenliğine daha hassastırlar.
Bu nedenle, özellikle temelleri değişik zemin türlerine oturan uzun ve çok
kolonlu köprülerin simülasyonlarında kullanılacak nitelikte yer hareketi
kayıtlarının ölçümü karmaşık bir süreçtir. Bilhassa hem eylemsizlik hem de
kinematik Zemin-Yapı Etkileşimi etkilerinin yaygın olduğu durumlarda, köprü Temel
Girdi Hareketlerinin doğrudan ölçümü mümkün olmayabilir. Bu çalışmada, uzamsal
olarak seyrek bir şekilde ölçülmüş sismik yapı davranış kayıtlarını kullanarak
eş zamanlı sistem ve girdi tanılaması sağlayan yeni bir yöntem önerilmektedir.
Önerilen metodun teyidi ve gerçek ölçekte problemlere uygulanabilirliğini
doğrulamak adına, yöntem Golden Gate Köprüsü'ne uygulanmış ve elde edilen
sonuçlar mevcut veriler ile karşılaştırılmıştır.

Anahtar Kelimeler

Golden Gate Köprüsü, Kuvvetli Yer Hareketi, Temel Giriş Hareketleri, Zemin-Yapı Etkileşimi

Destekleyen Kurum

Kaliforniya Jeolojik Araştırma Kurumu ve Kaliforniya Eyaleti Ulaşım Dairesi Başkanlığı

Proje Numarası

Sözleşme No: 1014-963 ve Destek No: 65A0450

Teşekkür

Yazarlar, UCLA Dijital Araştırma ve Eğitim Enstitüsü'nden Dr. D'Auria'ya, buradaki analizlerin UCLA Hoffman bilgisayar kümesi üzerinden yapılmasına yardımcı olduğu için teşekkür eder. Bu yazıda sunulan çalışmalar, kısmen Kaliforniya Jeolojik Araştırma Kurumu (Sözleşme No: 1014-963) ve Kaliforniya Eyaleti Ulaşım Dairesi Başkanlığı (Destek No: 65A0450) tarafından finanse edilmiştir. Bu çalışmada ifade edilen görüşler, bulgular, sonuçlar veya tavsiyeler yazarlara aittir ve destekleyen kurumların görüşlerini yansıtmaz.

Joint System-Input Identification of Bridge Structures

Öz

This paper presents a
novel framework for system identification of bridge structures using recorded
earthquake data. Bridge structures are prone to spatial variability of ground
motions because they extend over relatively long distances. So, input motion
measurement is a challenging task, especially for long bridges with multiple
piers. Moreover, direct measurement of the bridge Foundation Input Motions
(FIMs) may not be possible due to both inertial and kinematic Soil-Structure
Interaction (SSI) effects. In this study, we propose a joint system-input
identification solution using sparsely measured earthquake-induced responses.
We verify this method and its applicability for real scale problems using
simulated data obtained from the Golden Gate Bridge.

Anahtar Kelimeler

Golden Gate Bridge, Strong Ground Motion, Foundation Input Motions, Soil-Structure Interaction

Proje Numarası

Sözleşme No: 1014-963 ve Destek No: 65A0450

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