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Titre :
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Scaling earthquake ground motions for performance-based assessment of buildings (2011)
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Auteurs :
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Yin-Nan Huang, Auteur ;
Andrew S. Whittaker, Auteur ;
Nicolas Luco, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of structural engineering (Vol. 137 N° 3, Mars 2011)
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Article en page(s) :
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pp. 311-321
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Note générale :
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Génie Civil
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Langues :
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Anglais
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Index. décimale :
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624 (Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes)
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Tags :
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Ground motion Response spectra Scale Seismic design Time-series analysis
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Résumé :
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The impact of alternate ground-motion scaling procedures on the distribution of displacement responses in simplified structural systems is investigated. Recommendations are provided for selecting and scaling ground motions for performance-based assessment of buildings. Four scaling methods are studied, namely, (1) geometric-mean scaling of pairs of ground motions, (2) spectrum matching of ground motions, (3) first-mode-period scaling to a target spectral acceleration, and (4) scaling of ground motions per the distribution of spectral demands. Data were developed by nonlinear response-history analysis of a large family of nonlinear single degree-of-freedom (SDOF) oscillators that could represent fixed-base and base-isolated structures. The advantages and disadvantages of each scaling method are discussed. The relationship between spectral shape and a ground-motion randomness parameter, ε, is presented. A scaling procedure that explicitly considers spectral shape is proposed.
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DEWEY :
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624.17
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ISSN :
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0733-9445
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En ligne :
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http://ascelibrary.org/sto/resource/1/jsendh/v137/i3/p311_s1?isAuthorized=no
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