Economical steel plate shear walls for low-seismic regions / Hassan Moghimi in Journal of structural engineering, Vol. 139 N° 3 (Mars 2013)  

Public ISBD [article]  inJournal of structural engineering > Vol. 139 N° 3 (Mars 2013) . - pp. 379–388 Titre : Economical steel plate shear walls for low-seismic regions Type de document : texte imprimé Auteurs : Hassan Moghimi, Auteur ; Driver, Robert G., Auteur Année de publication : 2013 Article en page(s) : pp. 379–388 Note générale : structural engineering Langues : Anglais (eng) Mots-clés : cyclic tests  seismic design  shear walls  steel  plastic hinges Résumé : Previous research on steel plate shear walls (SPSWs) and current design codes have focused principally on achieving highly ductile behavior through stringent detailing requirements. As such, the system is generally considered to be economical only in high-seismic regions. However, lower demands in other regions may permit the use of more economical options. This paper describes a proposed concept for SPSWs that meets the intent of capacity design, while greatly improving competitiveness in seismic regions where maximum ductility is not required. A large-scale, 2-story SPSW specimen was tested to evaluate the associated performance. The wall had standard double-angle beam-to-column shear connections and was tested under vertical gravity load concurrent with reversing lateral loads at each floor level. The specimen survived 25 lateral load cycles, 18 of which were in the inelastic range. The test results indicated that excellent performance can be expected in low-seismic regions, despite significantly reduced costs, compared with traditional designs. The shear wall showed stable performance at large lateral deformation ratios with high levels of ductility and energy dissipation capacity. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000662 [article] Economical steel plate shear walls for low-seismic regions [texte imprimé] / Hassan Moghimi, Auteur ; Driver, Robert G., Auteur . - 2013 . - pp. 379–388. structural engineering Langues : Anglais (eng) in Journal of structural engineering > Vol. 139 N° 3 (Mars 2013) . - pp. 379–388 Mots-clés : cyclic tests  seismic design  shear walls  steel  plastic hinges Résumé : Previous research on steel plate shear walls (SPSWs) and current design codes have focused principally on achieving highly ductile behavior through stringent detailing requirements. As such, the system is generally considered to be economical only in high-seismic regions. However, lower demands in other regions may permit the use of more economical options. This paper describes a proposed concept for SPSWs that meets the intent of capacity design, while greatly improving competitiveness in seismic regions where maximum ductility is not required. A large-scale, 2-story SPSW specimen was tested to evaluate the associated performance. The wall had standard double-angle beam-to-column shear connections and was tested under vertical gravity load concurrent with reversing lateral loads at each floor level. The specimen survived 25 lateral load cycles, 18 of which were in the inelastic range. The test results indicated that excellent performance can be expected in low-seismic regions, despite significantly reduced costs, compared with traditional designs. The shear wall showed stable performance at large lateral deformation ratios with high levels of ductility and energy dissipation capacity. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000662

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