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Seismic reliability of V-braced frames: Influence of design methodologies / Longo, Alessandra in Earthquake engineering structural dynamics, Vol. 38 N° 14 (Novembre 2009) 

Public ISBD [article]  in Earthquake engineering structural dynamics > Vol. 38 N° 14 (Novembre 2009) . - pp. 1587-1608 Titre : Seismic reliability of V-braced frames: Influence of design methodologies Type de document : texte imprimé Auteurs : Longo, Alessandra, Auteur ; Montuori, Rosario, Auteur ; Piluso, Vincenzo, Auteur Article en page(s) : pp. 1587-1608 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Cyclic  behaviour;  V-braced  frames;  Lobal  mechanism;  Seismic  reliability Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : According to the most modern trend, performance-based seismic design is aimed at the evaluation of the seismic structural reliability defined as the mean annual frequency (MAF) of exceeding a threshold level of damage, i.e. a limit state. The methodology for the evaluation of the MAF of exceeding a limit state is herein applied with reference to concentrically V-braced steel frames designed according to different criteria. In particular, two design approaches are examined. The first approach corresponds to the provisions suggested by Eurocode 8 (prEN 1998 - Eurocode 8: design of structures for earthquake resistance. Part 1: general rules, seismic actions and rules for buildings), while the second approach is based on a rigorous application of capacity design criteria aiming at the control of the failure mode (J. Earthquake Eng. 2008; 12:1246-1266; J. Earthquake Eng. 2008; 12:728-759). The aim of the presented work is to focus on the seismic reliability obtained through these design methodologies. The probabilistic performance evaluation is based on an appropriate combination of probabilistic seismic hazard analysis, probabilistic seismic demand analysis (PSDA) and probabilistic seismic capacity analysis. Regarding PSDA, nonlinear dynamic analyses have been carried out in order to obtain the parameters describing the probability distribution laws of demand, conditioned to given values of the earthquake intensity measure. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe [article] Seismic reliability of V-braced frames: Influence of design methodologies [texte imprimé] / Longo, Alessandra, Auteur ; Montuori, Rosario, Auteur ; Piluso, Vincenzo, Auteur . - pp. 1587-1608. Génie Civil Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N° 14 (Novembre 2009) . - pp. 1587-1608 Mots-clés : Cyclic  behaviour;  V-braced  frames;  Lobal  mechanism;  Seismic  reliability Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : According to the most modern trend, performance-based seismic design is aimed at the evaluation of the seismic structural reliability defined as the mean annual frequency (MAF) of exceeding a threshold level of damage, i.e. a limit state. The methodology for the evaluation of the MAF of exceeding a limit state is herein applied with reference to concentrically V-braced steel frames designed according to different criteria. In particular, two design approaches are examined. The first approach corresponds to the provisions suggested by Eurocode 8 (prEN 1998 - Eurocode 8: design of structures for earthquake resistance. Part 1: general rules, seismic actions and rules for buildings), while the second approach is based on a rigorous application of capacity design criteria aiming at the control of the failure mode (J. Earthquake Eng. 2008; 12:1246-1266; J. Earthquake Eng. 2008; 12:728-759). The aim of the presented work is to focus on the seismic reliability obtained through these design methodologies. The probabilistic performance evaluation is based on an appropriate combination of probabilistic seismic hazard analysis, probabilistic seismic demand analysis (PSDA) and probabilistic seismic capacity analysis. Regarding PSDA, nonlinear dynamic analyses have been carried out in order to obtain the parameters describing the probability distribution laws of demand, conditioned to given values of the earthquake intensity measure. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe