Closed-form prediction of the alongwind-induced fatigue of structures / Maria Pia Repetto in Journal of structural engineering, Vol. 138 N° 9 (Septembre 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 9 (Septembre 2012) . - pp.1149–1160. Titre : Closed-form prediction of the alongwind-induced fatigue of structures Type de document : texte imprimé Auteurs : Maria Pia Repetto, Auteur ; Giovanni Solari, Auteur Année de publication : 2012 Article en page(s) : pp.1149–1160. Note générale : Génie civil Langues : Anglais (eng) Mots-clés : Design codes Environmental effects Fatigue damage Stochastic analysis Variable amplitude fatigue Résumé : Wind-induced fatigue is a crucial topic in the design of wind-sensitive structures. Despite this, methods proposed in literature are mainly addressed to research, or they are too simplified for engineering applications. Thus, suitable engineering and standards procedures are almost totally lacking, which is a major shortcoming in structural and wind engineering. Starting from a closed-form solution (CFS) recently proposed by the authors, this paper develops a novel engineering approach to evaluate the alongwind-induced fatigue of structures and structural elements. This approach is based on a hierarchy of hypotheses that lead to a progressive simplification of the basic formulation. Two classes of formulas, referred to as Levels I and II CFSs, are obtained and critically discussed with special concern for input parameters. Level I CFS implies three further simplifications joined together by the common aim of providing refined approximations of the reference target solution. Level II CFS implies three different simplifications joined together by the common aim of providing easy solutions on the safe side. This set of CFSs is framed within a general procedure that any country, society, or engineer can easily personalize to a situation and requirement, ranging from numerical tools to manual engineering calculations and code provisions. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000543 [article] Closed-form prediction of the alongwind-induced fatigue of structures [texte imprimé] / Maria Pia Repetto, Auteur ; Giovanni Solari, Auteur . - 2012 . - pp.1149–1160. Génie civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 9 (Septembre 2012) . - pp.1149–1160. Mots-clés : Design codes Environmental effects Fatigue damage Stochastic analysis Variable amplitude fatigue Résumé : Wind-induced fatigue is a crucial topic in the design of wind-sensitive structures. Despite this, methods proposed in literature are mainly addressed to research, or they are too simplified for engineering applications. Thus, suitable engineering and standards procedures are almost totally lacking, which is a major shortcoming in structural and wind engineering. Starting from a closed-form solution (CFS) recently proposed by the authors, this paper develops a novel engineering approach to evaluate the alongwind-induced fatigue of structures and structural elements. This approach is based on a hierarchy of hypotheses that lead to a progressive simplification of the basic formulation. Two classes of formulas, referred to as Levels I and II CFSs, are obtained and critically discussed with special concern for input parameters. Level I CFS implies three further simplifications joined together by the common aim of providing refined approximations of the reference target solution. Level II CFS implies three different simplifications joined together by the common aim of providing easy solutions on the safe side. This set of CFSs is framed within a general procedure that any country, society, or engineer can easily personalize to a situation and requirement, ranging from numerical tools to manual engineering calculations and code provisions. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000543

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