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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References
Fattuhi, N.I., ‘SFRC corbel tests’,ACI Struct. J. 84 (1987) 640–651.
Solanki, H. and Sabnis, G.M., ‘Reinforced concrete corbels-simplified’,ACI Struct. J. 84 (1987) 428–432.
Fattuhi, N.I. and Hughes, B.P., ‘Reinforced steel fiber concrete corbels with various shear span-to-depth-ratios’,ACI Struct. J. 86 (1989) 590–596.
Fattuhi, N.I. and Hughes, B.P., ‘Ductility of reinforced concrete corbels containing either steel fibers or stirrups’,ACI Struct. J. 86 (1989) 644–651.
Fattuhi, N.I., ‘Strength of SFRC corbels subjected to vertical load’,ACI Struct. J. 116 (1990) 701–718.
Fattuhi, N.I., ‘Column-load effect of reinforced concrete corbels’,ASCE J. of Struct. Engng. 116 (1990) 188–197.
Mansur, M.A. and Ong, K.C.G., ‘Behavior of reinforced fiber concrete deep beams in shear’,ACI Struct. J. 88 (1991) 98–105.
Fattuhi, N.I., ‘Strength of FRC corbels in flexure’,J. of Struct. Engng., ASCE 120 (1994) 360–377.
Yong, Y. and Balaguru, P., ‘Behaviour of reinforced high-strength-concrete corbels’,J. of Struct. Engng., ASCE 120 (1994) 1182–1201.
Fattuhi, N.I., ‘Reinforced corbels made with plain and fibrous concretes’,ACI Struct. J. 91 (1994) 530–536.
Foster, S.J., Powell, R.E. and Selim, H.S., ‘Performance of high-strength concrete corbels’,ACI Struct. J. 93 (1996) 555–563.
Hwang, S., Lu, W. and Lee, H., ‘Shear strength prediction for reinforced concrete corbels’,ACI Struct. J. 97 (2000) 543–552.
Hwang, S. and Lee, H., ‘Strength prediction for discontinuity regions by softened strut and tie model’,J. of Struct. Engng., ASCE,128 (2002) 1519–1526.
Campione, G., La Mendola, L. and Zingone, G., ‘Flexural shear-moment interaction in high strength fibre reinforced concrete beams’, Proc. of Fifth RILEM Symposium on Fibre-reinforced concretes (FRC), BEFIB 2000, Lyon, France, 13–15 September (2000) 451–460.
Campione, G., Cucchiara, C. and La mendola, L., ‘Role of fibres and stirrups on the behaviour of reinforced concrete beams under flexure and shear’, CCC3 2003—‘Composites in Constructions’, Consenza, Italy, 16–19 September (2003).
Oehlers, D.J. and Moran, J.P., ‘Premature failure of externally plated reinforced concrete beams’,J. of Struct. Engng., ASCE 116 (1990) 978–995.
Oehlers, D.J., ‘Reinforced concrete beams with plates glued to their soffits’,J. of Struct. Engng., ASCE 118 (1994) 2023–2038.
Neubauer, U. and Rostasy, F.S., ‘Design aspects of concrete structures strengthened with externally bonded CFRP plates’, Concrete & Composites, Proc. of the 7th Int. Conf. on Structural Faults and Repair, Vol.2 (1997) 109–118.
Campione G., La Mendola, L. and Papia, M. ‘Strength and ductility of fiber reinforced concrete corbels subjected to vertical loads’, Sixth RILEM Symp. on FRC, BEFIB 2004, Varenna, Lake Como, Italy, 20–22 Sept. (2004).
Naaman, A.E., ‘Strain hardening and deflection hardening fiber reinforced cement composites’, Proc. of IV Int. RILEM Workshop HPFRCC4, Ann Arbour, MI, USA (2003) 5–13.
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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