Rotation-based shear failure model for lightly confined RC columns / Wassim M. Ghannoum in Journal of structural engineering, Vol. 138 N° 10 (Octobre 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 10 (Octobre 2012) . - pp.1267–1278. Titre : Rotation-based shear failure model for lightly confined RC columns Type de document : texte imprimé Auteurs : Wassim M. Ghannoum, Auteur ; Jack P. Moehle, Auteur Année de publication : 2013 Article en page(s) : pp.1267–1278. Note générale : Génie civil Langues : Anglais (eng) Mots-clés : Reinforced concrete Columns Shear failure Analysis Modeling Résumé : A shear failure model for nonductile RC columns that sustain flexural yielding prior to shear failure is proposed. The model, which relates shear failure to column end rotation, was derived by performing a forward stepwise linear regression on a database compiled from column tests. Critical parameters that affect rotation capacity at shear failure were found to be axial load, spacing (rather than amount) of transverse reinforcements, and nominal shear stress. The model is suitable for use in nonlinear frame analyses using either a lumped-plasticity or fiber-section column idealization. The model also can be used to determine rotation limits for performance-based assessment of existing buildings. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000555 [article] Rotation-based shear failure model for lightly confined RC columns [texte imprimé] / Wassim M. Ghannoum, Auteur ; Jack P. Moehle, Auteur . - 2013 . - pp.1267–1278. Génie civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 10 (Octobre 2012) . - pp.1267–1278. Mots-clés : Reinforced concrete Columns Shear failure Analysis Modeling Résumé : A shear failure model for nonductile RC columns that sustain flexural yielding prior to shear failure is proposed. The model, which relates shear failure to column end rotation, was derived by performing a forward stepwise linear regression on a database compiled from column tests. Critical parameters that affect rotation capacity at shear failure were found to be axial load, spacing (rather than amount) of transverse reinforcements, and nominal shear stress. The model is suitable for use in nonlinear frame analyses using either a lumped-plasticity or fiber-section column idealization. The model also can be used to determine rotation limits for performance-based assessment of existing buildings. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000555

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