NDLI: Performance of RC frames with hybrid reinforcement under reversed cyclic loading

Content Provider	Springer Nature Link
Author	Nehdi, M. Said, A.
Copyright Year	2004
Abstract	The use of FRP as reinforcement in concrete structures has been growing rapidly. A potential application of FRP reinforcement is in reinforced concrete (RC) frames. However, due to FRP's predominantly elastic behaviour, FRP-RC members exhibit low ductility and energy dissipation. Hybrid steel-FRP reinforcement can be a viable solution to the lack of ductility of FRP-RC members. Using two layers of reinforcement in a section, FRP rebars can be placed in the outer layer and steel rebars in the inner layer away from the effects of carbonation and chloride intrusion. Combined with the use of FRP stirrups, this approach can enhance the corrosion resistance of RC members. However, current design standards and detailing criteria for FRP-RC structures do not provide detailed seismic provisions. In particular, the design and detailing of beam-column joints is a key issue in seismic design. During recent earthquakes, many structural collapses were initiated or caused by beam-column joint failures. Thus, research is needed to gain a better understanding of the behaviour of FRP and hybrid FRP-steel-RC under seismic loading. In this study, three full-scale beam-column joint specimens reinforced with steel, GFRP and a hybrid GFRP-steel configuration, respectively were tested in order to investigate their performance in the event of an earthquake.L'utilisation de barres en polymères renforcés de fibres (PRF) comme armature dans les structures en béton est en train d'augmenter rapidement. Une application prometteuse des armatures en PRF est dans les structures en cadres de béton armé à multi-étages. Cependant, à cause de leur comportement élastique, les membres renforcés avec des armatures en PRF démontrent une ductilité limitée et une faible capacité de dissipation d'énergie. Les systèmes hybrides (combinaison d'armatures en acier et en polymères renforcés de fibres de verre (PRFV) se présentent comme une solution pratique pour remédier aux inconvénients des systèmes renforcés uniquement avec PRFV. En utilisant deux couches d'armatures, les barres en PRFV peuvent être placées à l'extérieur et ceux en acier à l'intérieur, loin des effets de la carbonatation et l'intrusion des ions chlores. En plus, l'utilisation des étriers en PRFV peut améliorer la durabilité de ces structures. Cependant, les normes de conception actuelles pour PRF n'offrent pas assez de détails sur les provisions sismiques, en particulaier sur la conception des joints de poutres-colonnes. De récents tremblements de terre ont démontré sans équivoque que les joints de poutres-colonnes sont critiques pour assurer l'intégrité structurale. Alors, il est important d'étudier le comportement de tels assemblages utilisant des armatures en PRFV ou des armatures hybrides (acier-PRFV). Dans cette étude, trois assemblages poutrecolonne en grandeur nature renforcés avec des armatures en acier, PRFV, et hybride (acier-PRFV) ont été construits et testés sous charges cycliques pour examiner leur comportement durant des tremblements de terre.
Starting Page	627
Ending Page	637
Page Count	11
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	38
Issue Number	6
e-ISSN	18716873
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Theoretical and Applied Mechanics Structural Mechanics Mechanical Engineering Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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