Abstract
In the present paper an analytical and experimental investigation referring to the flexural behaviour of reinforced concrete corbels subjected to vertical forces is presented. For fixed shape and dimensions of the corbels the experimental investigation analyses the effects of the following: longitudinal and transverase steel reinforcements; fiber reinforced concrete (FRC) with hooked steel fibers; external wrapping retrofitting technique with a thin layer of carbon fiber sheet (CFRP). The analytical model based on equivalent truss structures, allows one to determine the bearing capacity of corbels, distinguishing the different ultimate states reached. The analytical results are then compared with experimental values, showing good agreement.
Résumé
Cet article traite d'une analyse thérique et expérimentale sur le comportement en flexion des poutres en encorbellement de béton armé sous forces verticales. Pour la typologie et les dimensions fixées des poutres en encorbellement, la recherche expérimentale analyse les paramètres suivants: l'armature longitudinale et transversale; le béton avec fibres d'acier (FRC); la consolidation avec des polymères renforcés de fibres de carbone (CFRP). Une analyse théorique a été préconçue pour prévoir la résistance maximale des poutres en encorbellement. Une comparaison des résultats expérimentaux et analytiques indique que les modèles apportent des prévisions satisfaisantes de la résistance.
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Campione, G., La Mendola, L. & Papia, M. Flexural behaviour of concrete corbels containing steel fibers or wrapped with FRP sheets. Mat. Struct. 38, 617–625 (2005). https://doi.org/10.1007/BF02481593
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DOI: https://doi.org/10.1007/BF02481593