Duygu ERTÜRKMEN, CENGİZ DÜNDAR, Serkan TOKGÖZ

Karbon Lifli Polimer Sargılı Narin Betonarme Kolonların Moment Büyütme Yöntemi ile Analizi

Bu çalışmada, karbon lifli polimer sargılı yüksek dayanımlı çelik lifli ve lifsiz betonarme kolonların davranışları incelenmiştir. Bu amaçla hazırlanan 8 adet çelik lifli ve lifsiz karbon fiber sargılı betonarme kolon numuneler iki eksenli eğilme ve eksenel yük altında test edilerek taşıma gücü kapasiteleri ve yükdeplasman eğrileri belirlenmiş ve aynı kolon numunelerinin teorik olarak da analizi gerçekleştirilmiştir. Analizde beton basınç bölgesi için literatürde yer alan sargılı beton gerilme-şekil değiştirme modeli kullanılmıştır. Ele alınan kolon numunelerin beton basınç dayanımı 53,13~76,76 MPa arasında değişmektedir. Test edilen kolon numunelerine ait dayanım, dış merkezlik, karbon lifli polimer malzeme özellikleri ve narinlik etkisi parametreleri yapılan analizlerde incelenmiştir. Analizde, narinlik etkisi ACI-318 yönetmeliği tarafından önerilen Moment Büyütme Yöntemi' ne göre ele alınmıştır. Kolon numunelerin analizinden elde edilen sonuçların deneysel olarak elde edilen sonuçlarla uyum içinde olduğu gözlenmiştir.

Analysis of Carbon Fiber Polymer Confined Slender Reinforced Concrete Columns by Using Moment Magnification Method

In this study, the behavior of carbon fiber polymer confined plain and steel fiber reinforced concrete columns were examined. For this purpose, carbon fiber polymer confined plain and steel fiber reinforced concrete column specimens were prepared and analyzed to determine the ultimate strength capacity and the load-deflection curves of columns. In the analysis, a stress-strain model for confined concrete was used for the concrete compression zone. Compressive strength of reinforced concrete column specimens are range from 53,13~76,76 MPa. In the analysis compressive strength, eccentricity, carbon fiber polymer material properties and parameters of slenderness effect were examined. In the analysis, slenderness effect of the column is taken into account by using Moment Magnification Method suggested by ACI-318 building code requirements for structural concrete. In conclusion the analysis and experimental results of carbon fiber reinforced polymer confined plain and steel fiber reinforced concrete columns have been achieved in good accuracy

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