Modified steel bar model incorporating bond-slip for seismic assessment of concrete structures / Franco Braga in Journal of structural engineering, Vol. 138 N° 11 (Novembre 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 11 (Novembre 2012) . - pp. 1342-1350 Titre : Modified steel bar model incorporating bond-slip for seismic assessment of concrete structures Type de document : texte imprimé Auteurs : Franco Braga, Auteur ; Rosario Gigliotti, Auteur ; Michelangelo Laterza, Auteur Année de publication : 2013 Article en page(s) : pp. 1342-1350 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Reinforced concrete Bond Slip Modeling Nonlinear analysis Existing buildings Résumé : This paper presents a simplified model for describing the response of a longitudinal bar embedded in concrete, taking into account the bond-slip phenomenon. The model is developed by assuming a linear bond-slip field along the bar anchorage length and provides a simplified stress-strain relationship to assign to the longitudinal reinforcement. The analytical approach adopted makes the proposed model very convenient from a computational standpoint because, unlike many other refined models, it does not require a multilevel iterative process. Moreover, the assumptions made are particularly appropriate for modeling bond-slip of smooth bars generally used in older reinforced concrete buildings. The implementation strategy of the proposed bond-slip model in general-purpose nonlinear structural analysis software and comparisons with experimental results are discussed in a companion paper. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000587 [article] Modified steel bar model incorporating bond-slip for seismic assessment of concrete structures [texte imprimé] / Franco Braga, Auteur ; Rosario Gigliotti, Auteur ; Michelangelo Laterza, Auteur . - 2013 . - pp. 1342-1350. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 11 (Novembre 2012) . - pp. 1342-1350 Mots-clés : Reinforced concrete Bond Slip Modeling Nonlinear analysis Existing buildings Résumé : This paper presents a simplified model for describing the response of a longitudinal bar embedded in concrete, taking into account the bond-slip phenomenon. The model is developed by assuming a linear bond-slip field along the bar anchorage length and provides a simplified stress-strain relationship to assign to the longitudinal reinforcement. The analytical approach adopted makes the proposed model very convenient from a computational standpoint because, unlike many other refined models, it does not require a multilevel iterative process. Moreover, the assumptions made are particularly appropriate for modeling bond-slip of smooth bars generally used in older reinforced concrete buildings. The implementation strategy of the proposed bond-slip model in general-purpose nonlinear structural analysis software and comparisons with experimental results are discussed in a companion paper. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000587

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