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Redundancy and robustness, or when is redundancy redundant? / Yoshihiro Kanno in Journal of structural engineering, Vol. 137 N° 9 (Septembre 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 9 (Septembre 2011) . - pp. 935-945 Titre : Redundancy and robustness, or when is redundancy redundant? Type de document : texte imprimé Auteurs : Yoshihiro Kanno, Auteur ; Yakov Ben-Haim, Auteur Année de publication : 2011 Article en page(s) : pp. 935-945 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Robustness  Redundancy  Info-gap  Uncertainty  Structural  integrity  Structural  degradation Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The redundancy of a structure refers to the extent of degradation the structure can suffer without losing some specified elements of its functionality. However, because future structural degradation is unknown during design and analysis, it is evident that structural redundancy is related to robustness against uncertainty. This paper proposes a quantitative and widely applicable concept of strong redundancy and shows its relation to the info-gap robustness of the structure. In particular, one of this paper’s propositions establishes general conditions in which the strong redundancy is equivalent to the robustness. This paper also defines a concept of weak redundancy and presents propositions that relate it to the strong redundancy and the robustness. Results are illustrated with several heuristic and engineering examples. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i9/p935_s1?bypassSSO=1 [article] Redundancy and robustness, or when is redundancy redundant? [texte imprimé] / Yoshihiro Kanno, Auteur ; Yakov Ben-Haim, Auteur . - 2011 . - pp. 935-945. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 9 (Septembre 2011) . - pp. 935-945 Mots-clés : Robustness  Redundancy  Info-gap  Uncertainty  Structural  integrity  Structural  degradation Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The redundancy of a structure refers to the extent of degradation the structure can suffer without losing some specified elements of its functionality. However, because future structural degradation is unknown during design and analysis, it is evident that structural redundancy is related to robustness against uncertainty. This paper proposes a quantitative and widely applicable concept of strong redundancy and shows its relation to the info-gap robustness of the structure. In particular, one of this paper’s propositions establishes general conditions in which the strong redundancy is equivalent to the robustness. This paper also defines a concept of weak redundancy and presents propositions that relate it to the strong redundancy and the robustness. Results are illustrated with several heuristic and engineering examples. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i9/p935_s1?bypassSSO=1