Documents disponibles écrits par cet auteur

A new approximation for spectral velocity ordinates at short periods / Vinay K. Gupta in Earthquake engineering structural dynamics, Vol. 38 N° 7 (Juin 2009) 

Public ISBD [article]  in Earthquake engineering structural dynamics > Vol. 38 N° 7 (Juin 2009) . - pp. 941-949 Titre : A new approximation for spectral velocity ordinates at short periods Type de document : texte imprimé Auteurs : Vinay K. Gupta, Auteur Article en page(s) : pp. 941-949 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Response  spectrum  method;  Spectral  velocity;  Pseudo  spectral  velocity Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Response spectrum methods in earthquake-resistant design sometimes require information on the spectral velocity (SV) for a given single-degree-of-freedom oscillator and specified seismic hazard. SV has been conventionally approximated as pseudo spectral velocity (PSV) in the case of lightly damped structures that are not too flexible. This study shows that the PSV approximation may lead to large overestimation errors when the structure is stiffer to the ground motion and the ground motion is a long-period motion. It is also shown that a new approximation requiring the use of peak ground acceleration of the motion may significantly reduce these errors. ISSN : 0098-8847 En ligne : http://www3.interscience.wiley.com/journal/121539135/abstract [article] A new approximation for spectral velocity ordinates at short periods [texte imprimé] / Vinay K. Gupta, Auteur . - pp. 941-949. Génie Civil Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N° 7 (Juin 2009) . - pp. 941-949 Mots-clés : Response  spectrum  method;  Spectral  velocity;  Pseudo  spectral  velocity Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Response spectrum methods in earthquake-resistant design sometimes require information on the spectral velocity (SV) for a given single-degree-of-freedom oscillator and specified seismic hazard. SV has been conventionally approximated as pseudo spectral velocity (PSV) in the case of lightly damped structures that are not too flexible. This study shows that the PSV approximation may lead to large overestimation errors when the structure is stiffer to the ground motion and the ground motion is a long-period motion. It is also shown that a new approximation requiring the use of peak ground acceleration of the motion may significantly reduce these errors. ISSN : 0098-8847 En ligne : http://www3.interscience.wiley.com/journal/121539135/abstract