Nonlinear stochastic dynamic analysis for performance-based earthquake engineering / Der Kiureghian, Armen in Earthquake engineering structural dynamics, Vol. 38 N°5 (Avril 2009)  

Nonlinear stochastic dynamic analysis for performance-based earthquake engineering [texte imprimé] / Der Kiureghian, Armen, Auteur ; Takita, Kazuya, Auteur . - pp. 719-738.
Génie Civil
Langues : Anglais (eng)
in Earthquake engineering structural dynamics > Vol. 38 N°5 (Avril 2009) . - pp. 719-738

Mots-clés :	Equivalent linearization  Fragility curve  Nonlinear response • Seismic demand  Stochastic dynamics  Tail probability
Index. décimale :	624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels
Résumé :	A new approach for computing seismic fragility curves for nonlinear structures for use in performance-based earthquake engineering analysis is proposed. The approach makes use of a recently developed method for nonlinear stochastic dynamic analysis by tail-equivalent linearization. The ground motion is modeled as a discretized stochastic process with a set of parameters that characterizes its evolutionary intensity and frequency content. For each selected response (seismic demand) threshold, a linear system is defined that has the same tail probability as the nonlinear response in first-order approximation. Simple linear random vibration analysis with the tail-equivalent linear system then yields the fragility curve. The approach has the advantage of avoiding the selection and scaling of recorded accelerograms and repeated time-history analyses, which is the current practice for developing fragility curves.
ISSN :	0098-8847
En ligne :	http://www3.interscience.wiley.com/journal/122205256/abstract