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Soil-foundation-structure interaction with mobilization of bearing capacity / V. Drosos in Journal of geotechnical and geoenvironmental engineering, Vol. 138 N° 11 (Novembre 2012) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 11 (Novembre 2012) . - pp. 1369–1386 Titre : Soil-foundation-structure interaction with mobilization of bearing capacity : Experimental study on sand Type de document : texte imprimé Auteurs : V. Drosos, Auteur ; T. Georgarakos, Auteur ; M. Loli, Auteur Année de publication : 2013 Article en page(s) : pp. 1369–1386 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Shallow  foundation  Nonlinear  behavior  Bridge  pier  Shaking  table  testing  Experiment  Seismic  response  Slow-cyclic  pushover Résumé : Recent studies have highlighted the beneficial role of foundation uplifting and the potential effectiveness of guiding the plastic hinge into the foundation soil by allowing full mobilization of bearing capacity during strong seismic shaking. With the inertia loading transmitted onto the superstructure being limited by the capacity of the foundation, this concept may provide an alternative method of in-ground seismic isolation: the so-called rocking isolation. Attempting to unravel the effectiveness of this alternative design method, this paper experimentally investigates the nonlinear response of a surface foundation on sand and its effect on the seismic performance of an idealized slender single-degree-of-freedom structure. Using a bridge pier as an illustrative prototype, three foundation design alternatives are considered, representing three levels of design conservatism. Their performance is investigated through static (monotonic and slow-cyclic pushover) loading, and reduced-scale shaking table testing. Rocking isolation may provide a valid alternative for the seismic protection of structures, providing encouraging evidence in favor of the innovative idea of moving foundation design toward a less conservative, even unconventional, treatment. ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000705 [article] Soil-foundation-structure interaction with mobilization of bearing capacity : Experimental study on sand [texte imprimé] / V. Drosos, Auteur ; T. Georgarakos, Auteur ; M. Loli, Auteur . - 2013 . - pp. 1369–1386. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 11 (Novembre 2012) . - pp. 1369–1386 Mots-clés : Shallow  foundation  Nonlinear  behavior  Bridge  pier  Shaking  table  testing  Experiment  Seismic  response  Slow-cyclic  pushover Résumé : Recent studies have highlighted the beneficial role of foundation uplifting and the potential effectiveness of guiding the plastic hinge into the foundation soil by allowing full mobilization of bearing capacity during strong seismic shaking. With the inertia loading transmitted onto the superstructure being limited by the capacity of the foundation, this concept may provide an alternative method of in-ground seismic isolation: the so-called rocking isolation. Attempting to unravel the effectiveness of this alternative design method, this paper experimentally investigates the nonlinear response of a surface foundation on sand and its effect on the seismic performance of an idealized slender single-degree-of-freedom structure. Using a bridge pier as an illustrative prototype, three foundation design alternatives are considered, representing three levels of design conservatism. Their performance is investigated through static (monotonic and slow-cyclic pushover) loading, and reduced-scale shaking table testing. Rocking isolation may provide a valid alternative for the seismic protection of structures, providing encouraging evidence in favor of the innovative idea of moving foundation design toward a less conservative, even unconventional, treatment. ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000705