İsmail ÜNSAL, Cengiz DÜNDAR, A. Kamil TANRIKULU

Çekme Rijitleşmesinin FRP ve Çelik Donatılı Betonarme Kirişlerin Yük-Deplasman Davranışı Üzerindeki Etkisi

Bu çalışmada çekme rijitleşmesinin, FRP ve çelik donatılı betonarme kirişlerin yük-deplasman davranışı

Anahtar Kelimeler:

Çekme rijitleşmesi, FRP donatılı kiriş, Şekil değişme, Deplasman

Tension Stiffening Effect on Load–Deflection Behavior of Concrete Beams Reinforced with FRP and Steel Bars

In this study, tension stiffening effect on load-deflection behavior of concrete beams reinforced with FRPand steel bars is investigated. A total of 12 FRP reinforced concrete beam specimens, available in theliterature, were considered in the analysis. In order to investigate tension stiffening effect on flexuralbehavior, bilinear tensile stress-strain model was considered for concrete material. In this model theparameter αts controls the tension stiffening effect on the load-deflection behavior of the beam. Load-deflection curves for the specimens were obtained with varying αts between 2 to 25, and then werecompared with the experimental results. In conclusion it is observed that the value of αts to be taken intoaccount for calculations in order to predict load-deflection behavior of reinforced concrete beamssignificantly depend on the reinforcement ratio and the mechanical properties of reinforcement.

Keywords:

Tension stiffening FRP reinforced beam, Strain, Load-deflection, Moment-curvature,

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