Stability charts for 3D failures of steep slopes subjected to seismic excitation / Radoslaw L. Michalowski in Journal of geotechnical and geoenvironmental engineering, Vol. 137 N° 2 (Fevrier 2011)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 137 N° 2 (Fevrier 2011) . - pp. 183-189 Titre : Stability charts for 3D failures of steep slopes subjected to seismic excitation Type de document : texte imprimé Auteurs : Radoslaw L. Michalowski, Auteur ; Tabetha Marte, Auteur Année de publication : 2011 Article en page(s) : pp. 183-189 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Slopes Stability Seismic analysis Limit state 3D Failure Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Design of slopes and analysis of existing slopes subjected to seismic shaking are carried out routinely using approximations of plane strain and substitution of a quasi-static load for the seismic excitation. A three-dimensional (3D) analysis of slopes is carried out, based on the kinematic theorem of limit analysis. A rotational failure mechanism is used with the failure surface in the shape of a curvilinear cone sector passing through the slope toe, typical of steep slopes. A quasi-static approach is used to develop stability charts allowing assessment of the factor of safety of slopes without the need for an iterative procedure. The charts are of practical importance in cases of excavation slopes and whenever a slope is physically constrained, preventing a plane failure. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i2/p183_s1?isAuthorized=no [article] Stability charts for 3D failures of steep slopes subjected to seismic excitation [texte imprimé] / Radoslaw L. Michalowski, Auteur ; Tabetha Marte, Auteur . - 2011 . - pp. 183-189. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 2 (Fevrier 2011) . - pp. 183-189 Mots-clés : Slopes Stability Seismic analysis Limit state 3D Failure Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Design of slopes and analysis of existing slopes subjected to seismic shaking are carried out routinely using approximations of plane strain and substitution of a quasi-static load for the seismic excitation. A three-dimensional (3D) analysis of slopes is carried out, based on the kinematic theorem of limit analysis. A rotational failure mechanism is used with the failure surface in the shape of a curvilinear cone sector passing through the slope toe, typical of steep slopes. A quasi-static approach is used to develop stability charts allowing assessment of the factor of safety of slopes without the need for an iterative procedure. The charts are of practical importance in cases of excavation slopes and whenever a slope is physically constrained, preventing a plane failure. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i2/p183_s1?isAuthorized=no

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