Yanal Yüklere Maruz Kalan Betonarme Kolonlarin Basit Nonlinear Analizi

Bu çalışmada, zayıf detaylandırılmış betonarme kolonların yanal yükler altındaki monotonik ve histeretik davranışı SAP2000 ile basit bir şekilde modellenmiştir. Eğilme, donatı sıyrılması ve kesme deformasyonlarının yanal deformasyona katkıda bulunduğu literatürde gösterilmiştir. Bu deformasyonların her biri için RC kolonların monotonik ve histeretik tepkileri belirlenmiştir. İtme yükü altında, eğilme, donatı sıyrılaması ve kesme deformasyonlarından kaynaklanan deformasyonlar, kolonun monotonik davranışını oluşturmak için toplanmıştır. Monotonik modelden alınan yük deformasyon eğrisi, histeretik pivot modelin omurga eğrisini oluşturmak için kullanılmıştır. Bu çalışmada elde edilen monotonik ve histeretik yanal yük-deplasman eğrileri deneysel çalışmalardan elde edilen sonuçlarla karşılaştırılmıştır. SAP2000 ve deneysel sonuçların iyi bir uyum içinde olduğu ve zayıf detaylandırılmış RC kolonlarının davranışının karmaşık analiz yöntemlerini kullanmak yerine SAP2000 tarafından basitleştirildiği gösterilmiştir.

Anahtar Kelimeler:

Zayıf kolon, Eğilme deformasyonu, Kayma deformasyonu, Donatı kayması, SAP2000, Monotonik model, Histeretik model

Simplified Nonlinear Analysis of RC Columns Exposed to Lateral Loads

In this study, the monotonic and hysteretic behavior of poorly detailed reinforced concrete (RC) columns under lateral loads is simply modeled by SAP2000. It has been shown in literature that the flexural, reinforcement slip and shear deformations is contributed to lateral deformation. The monotonic and hysteretic responses of RC columns due to each of these deformations, were determined. Under pushover loading, deformations due to the flexural, reinforcement slip and shear deformations were summed up to create monotonic behavior of the column. The load-deformation curve from the monotonic model were used to create backbone curve of hysteretic pivot model. The monotonic and hysteretic lateral load- displacement curves obtained in this study were compared with the results obtained from experimental studies. It has been shown that SAP2000 and experimental results were in good agreement and the behavior of poorly detailed RC columns are simplified by SAP2000 instead of using the complex analysis methods.

Keywords:

Weak column, Flexural deformation, Shear deformation, Reinforcement slip, SAP2000, Monotonic model, Hysteretic model,

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