Scaling earthquake ground motions for performance-based assessment of buildings / Yin-Nan Huang in Journal of structural engineering, Vol. 137 N° 3 (Mars 2011)  

Scaling earthquake ground motions for performance-based assessment of buildings [texte imprimé] / Yin-Nan Huang, Auteur ; Andrew S. Whittaker, Auteur ; Nicolas Luco, Auteur . - 2011 . - pp. 311-321.
Génie Civil
Langues : Anglais (eng)
in Journal of structural engineering > Vol. 137 N° 3 (Mars 2011) . - pp. 311-321

Mots-clés :	Ground motion Response spectra Scale Seismic design Time-series analysis
Index. décimale :	624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes
Résumé :	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.
DEWEY :	624.17
ISSN :	0733-9445
En ligne :	http://ascelibrary.org/sto/resource/1/jsendh/v137/i3/p311_s1?isAuthorized=no