[article]
| Titre : |
Nonlinear stochastic dynamic analysis for performance-based earthquake engineering |
| Type de document : |
texte imprimé |
| Auteurs : |
Der Kiureghian, Armen, Auteur ; Takita, Kazuya, Auteur |
| Article en page(s) : |
pp. 719-738 |
| Note générale : |
Génie Civil |
| Langues : |
Anglais (eng) |
| 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 |
in Earthquake engineering structural dynamics > Vol. 38 N°5 (Avril 2009) . - pp. 719-738
[article] 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 |
|
Nonlinear stochastic dynamic analysis for performance-based earthquake engineering in Earthquake engineering structural dynamics, Vol. 38 N°5 (Avril 2009)
