Method for probabilistic displacement-based design of RC structures / Paolo Franchin in Journal of structural engineering, Vol. 138 N° 5 (Mai 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 5 (Mai 2012) . - pp.585–591. Titre : Method for probabilistic displacement-based design of RC structures Type de document : texte imprimé Auteurs : Paolo Franchin, Auteur ; Paolo E. Pinto, Auteur Année de publication : 2012 Article en page(s) : pp.585–591. Note générale : Génie civil Langues : Anglais (eng) Mots-clés : Seismic analysis Earthquake engineering Inelastic Mean annual rate Risk Response sensitivitySAC/FEMA Résumé : An approximate method is proposed for seismic design of reinforced concrete (RC) structures to meet multiple structural performance requirements expressed in terms of exceedance probabilities. The method is approximate in nature and rests on two main results: (1) the closed-form solution for the mean annual rate of exceedance of a limit state and (2) the empirical equal-displacement rule. Compliance with design objectives is obtained through a gradient-based search algorithm in the space of the design variables with reference to a linear elastic proxy of the structure. To this purpose, analytical gradients for Cornell’s formula are derived. An application illustrates the method and its validation through inelastic time-history analysis. From the limited investigation carried out, the method appears to offer satisfactory accuracy. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000492 [article] Method for probabilistic displacement-based design of RC structures [texte imprimé] / Paolo Franchin, Auteur ; Paolo E. Pinto, Auteur . - 2012 . - pp.585–591. Génie civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 5 (Mai 2012) . - pp.585–591. Mots-clés : Seismic analysis Earthquake engineering Inelastic Mean annual rate Risk Response sensitivitySAC/FEMA Résumé : An approximate method is proposed for seismic design of reinforced concrete (RC) structures to meet multiple structural performance requirements expressed in terms of exceedance probabilities. The method is approximate in nature and rests on two main results: (1) the closed-form solution for the mean annual rate of exceedance of a limit state and (2) the empirical equal-displacement rule. Compliance with design objectives is obtained through a gradient-based search algorithm in the space of the design variables with reference to a linear elastic proxy of the structure. To this purpose, analytical gradients for Cornell’s formula are derived. An application illustrates the method and its validation through inelastic time-history analysis. From the limited investigation carried out, the method appears to offer satisfactory accuracy. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000492

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