NUMERICAL MODELING OF EFFECT OF TYPE OF CONFINEMENT TO BEHAVIOUR OF COLUMNS SUBJECTED TO EARTHQUAKE LOADING

Öz

Columns are axially loaded elements subjected to reversed cyclic loading under earthquake The behavior of the columns becomes very important under the influence of this complex loading pattern. It has been observed that damage caused by collapse or heavy damage after earthquake are caused by lack of confinement. For this reason, the effect of confinement on column behaviour is one of important topics that attract researchers’ attention. In this study, numerical analyses have been performed by using open source object-oriented finite element software OpenSees by taking the experimental study that investigates effect of type of confinement to column behavior, which is performed by Saatçioğlu and Özcebe (1989) into consideration. When numerical analysis is performed, element and material models to represent the column specimens are correctly selected. The numerical models are analyzed under the effect of the earthquake loads, obtained results are compared with the mentioned study and it is observed that the results are consistent with each other.

Anahtar Kelimeler

• Confinement type,Reversed cyclic loading,OpenSees

SARGILAMA TİPİNİN DEPREM YÜKLERİNE MARUZ KALAN KOLONLARIN DAVRANIŞINA ETKİSİNİN SAYISAL OLARAK MODELLENMESİ

Öz

Kolonlar deprem etkisi altında tersinir ve tekrarlı yüklere maruz kalan eksenel yük elemanlarıdır. Bu karmaşık yükleme durumu etkisinde kolonların davranışının analizi oldukça önemli hale gelmektedir. Deprem sonrası göçme veya ağır hasara uğramış yapılarda, oluşan hasarların kolon sargılama eksikliklerinden kaynaklandığı görülmüştür. Bu sebeple sargılamanın kolon davranışına olan etkisi araştırmacıların ilgisini çeken önemli konular arasında yer almaktadır. Bu çalışmada, sargı tipinin kolon davranışına etkisini inceleyen Saatçioğlu ve Özcebe (1989) tarafından yapılmış kolon deneyleri numune olarak seçilerek, açık kaynak kodlu sonlu elemanlar programı OpenSees ile seçilen kolonların sayısal analizi yapılmıştır. Sayısal analiz yapılırken numuneleri doğru temsil edecek eleman ve malzeme modelleri seçilmiştir. Oluşturulan sayısal modeller deprem yükleri etkisi altında analiz edilmiş, elde edilen sonuçlar mevcut deneysel çalışmanın sonuçları ile karşılaştırılmış ve sonuçların birbiri ile uyumlu olduğu görülmüştür.

Anahtar Kelimeler

• Sargılama tipi,Tersinir tekrarlı yükleme,OpenSees

Kaynakça

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