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Design input motion synthesis considering the effect of uncertainty in structural and seismic parameters by feature indexes / Riki Honda in Journal of structural engineering, Vol. 137 N° 3 (Mars 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 3 (Mars 2011) . - pp. 391-400 Titre : Design input motion synthesis considering the effect of uncertainty in structural and seismic parameters by feature indexes Type de document : texte imprimé Auteurs : Riki Honda, Auteur ; Tauqir Ahmed, Auteur Année de publication : 2011 Article en page(s) : pp. 391-400 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Input  ground  motion  Seismic  design  Uncertainty  Nonlinear  response  Feature  index Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Various aspects of earthquakes and structures have inherent uncertainty, and this consideration is essential for seismic design. It makes the input ground-motion selection for seismic design a difficult task, especially when nonlinear dynamic analysis of the structure is utilized. This paper presents a simple scheme to deal with the problem. First, a set of possible ground motions that reflects the effect of uncertainty is considered. The set is described by feature indexes that take into consideration the effect of ground motions on structural behaviors. Second, the ground motion that represents the set in terms of the feature indexes is synthesized as a design ground motion. A scheme to synthesize a ground motion to represent the set is also presented. The ground motion is synthesized by iteratively modifying its time-frequency characteristics using wavelet functions to improve the values of feature indexes. As numerical simulations, design ground motion for a pier structure is synthesized considering uncertainty of ground motions and structural parameters. The synthesized ground motion shows good performance as a design input motion, and the usefulness of the proposed scheme is verified. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i3/p391_s1?isAuthorized=no [article] Design input motion synthesis considering the effect of uncertainty in structural and seismic parameters by feature indexes [texte imprimé] / Riki Honda, Auteur ; Tauqir Ahmed, Auteur . - 2011 . - pp. 391-400. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 3 (Mars 2011) . - pp. 391-400 Mots-clés : Input  ground  motion  Seismic  design  Uncertainty  Nonlinear  response  Feature  index Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Various aspects of earthquakes and structures have inherent uncertainty, and this consideration is essential for seismic design. It makes the input ground-motion selection for seismic design a difficult task, especially when nonlinear dynamic analysis of the structure is utilized. This paper presents a simple scheme to deal with the problem. First, a set of possible ground motions that reflects the effect of uncertainty is considered. The set is described by feature indexes that take into consideration the effect of ground motions on structural behaviors. Second, the ground motion that represents the set in terms of the feature indexes is synthesized as a design ground motion. A scheme to synthesize a ground motion to represent the set is also presented. The ground motion is synthesized by iteratively modifying its time-frequency characteristics using wavelet functions to improve the values of feature indexes. As numerical simulations, design ground motion for a pier structure is synthesized considering uncertainty of ground motions and structural parameters. The synthesized ground motion shows good performance as a design input motion, and the usefulness of the proposed scheme is verified. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i3/p391_s1?isAuthorized=no