On the evaluation of seismic response of structures by nonlinear static methods / Bosco, Melina in Earthquake engineering structural dynamics, Vol. 38 N° 13 (Octobre 2009)  

Public ISBD [article]  inEarthquake engineering structural dynamics > Vol. 38 N° 13 (Octobre 2009) . - pp. 1465-1482 Titre : On the evaluation of seismic response of structures by nonlinear static methods Type de document : texte imprimé Auteurs : Bosco, Melina, Auteur ; Ghersi, Aurelio, Auteur ; Marino, Edoardo M., Auteur Article en page(s) : pp. 1465-1482 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Displacement-based design  Inelastic seismic analysis  Earthquake-resistant structures Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : In the most recent seismic codes, the assessment of the seismic response of structures may be carried out by comparing the displacement capacity, provided by nonlinear static analysis, with the displacement demand. In many cases the code approach is based on the N2 method proposed by Fajfar, which evaluates the displacement demand by defining, as an intermediate step, a single degree-of-freedom (SDOF) system equivalent to the examined structure. Other codes suggest simpler approaches, which do not require equivalent SDOF systems, but they give slightly different estimation of the seismic displacement demand. The paper points out the differences between the methods and suggests an operative approach that provides the same accuracy as the N2 method without requiring the evaluation of an equivalent SDOF system. A wide parametric investigation allows an accurate comparison of the different methods and demonstrates the effectiveness of the proposed operative approach. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe [article] On the evaluation of seismic response of structures by nonlinear static methods [texte imprimé] / Bosco, Melina, Auteur ; Ghersi, Aurelio, Auteur ; Marino, Edoardo M., Auteur . - pp. 1465-1482. Génie Civil Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N° 13 (Octobre 2009) . - pp. 1465-1482 Mots-clés : Displacement-based design  Inelastic seismic analysis  Earthquake-resistant structures Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : In the most recent seismic codes, the assessment of the seismic response of structures may be carried out by comparing the displacement capacity, provided by nonlinear static analysis, with the displacement demand. In many cases the code approach is based on the N2 method proposed by Fajfar, which evaluates the displacement demand by defining, as an intermediate step, a single degree-of-freedom (SDOF) system equivalent to the examined structure. Other codes suggest simpler approaches, which do not require equivalent SDOF systems, but they give slightly different estimation of the seismic displacement demand. The paper points out the differences between the methods and suggests an operative approach that provides the same accuracy as the N2 method without requiring the evaluation of an equivalent SDOF system. A wide parametric investigation allows an accurate comparison of the different methods and demonstrates the effectiveness of the proposed operative approach. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe

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