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Three-dimensional analysis of locally loaded slopes / R. L. Michalowski in Géotechnique, Vol. 39 N°1 (Mars 1989) 

Public ISBD [article]  in Géotechnique > Vol. 39 N°1 (Mars 1989) . - pp. 27 –38 Titre : Three-dimensional analysis of locally loaded slopes Type de document : texte imprimé Auteurs : R. L. Michalowski, Auteur Année de publication : 2007 Article en page(s) : pp. 27 –38 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Slopes  Bearing  capacity  Limit  state  analysis  Stability Résumé : A three-dimensional slope stability analysis for drained frictional-cohesive material based on the upper-bound technique of limit analysis is presented. A rigid-block toe or above-the-toe collapse mechanism is considered, with energy dissipation taking place along planar velocity discontinuities. The technique is appropriate for slope analysis when question arises as to the level of permissible loads on slopes where the load is confined to a limited area (local load). The results in terms of limit loads are compared with those available in the literature for a particular case of a frictionless material. It was found that, for a wide variety of parameters (especially for large safety margins), the present analysis yields lower values of limit loads. Since they are rigorous upper bounds to the true limit load, these results should be considered as closer to the actual limit load. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.1.27 [article] Three-dimensional analysis of locally loaded slopes [texte imprimé] / R. L. Michalowski, Auteur . - 2007 . - pp. 27 –38. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 39 N°1 (Mars 1989) . - pp. 27 –38 Mots-clés : Slopes  Bearing  capacity  Limit  state  analysis  Stability Résumé : A three-dimensional slope stability analysis for drained frictional-cohesive material based on the upper-bound technique of limit analysis is presented. A rigid-block toe or above-the-toe collapse mechanism is considered, with energy dissipation taking place along planar velocity discontinuities. The technique is appropriate for slope analysis when question arises as to the level of permissible loads on slopes where the load is confined to a limited area (local load). The results in terms of limit loads are compared with those available in the literature for a particular case of a frictionless material. It was found that, for a wide variety of parameters (especially for large safety margins), the present analysis yields lower values of limit loads. Since they are rigorous upper bounds to the true limit load, these results should be considered as closer to the actual limit load. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.1.27