Validation of lade’s failure criteria at overconsolidated general stress states / Sonia Fortuna in Journal of geotechnical and geoenvironmental engineering, Vol. 137 N° 1 (Janvier 2011)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 137 N° 1 (Janvier 2011) . - pp. 105-108 Titre : Validation of lade’s failure criteria at overconsolidated general stress states Type de document : texte imprimé Auteurs : Sonia Fortuna, Auteur Année de publication : 2011 Article en page(s) : pp. 105-108 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Clays Apparent cohesion Failure criterion Friction Overconsolidated states Laboratory tests Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Several geotechnical engineering constructions subject the soil to a partial stress reduction. In addition, in practice, often both axisymmetric and nonaxisymmetric conditions can apply in different locations in the ground affected by the construction. In general, the corresponding stress states at failure will be, therefore, overconsolidated and cover a wide domain of the space of the principal stresses. However, the classic failure criteria typically fail to reproduce the observed failure envelope in wide range of stresses. In this note, the original and modified Lade’s criteria are validated and compared against recent data on Pisa clay at general overconsolidated stress states, in compression and extension. A generalization of the modified Lade’s criterion at overconsolidated clays is also proposed. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i1/p105_s1?isAuthorized=no [article] Validation of lade’s failure criteria at overconsolidated general stress states [texte imprimé] / Sonia Fortuna, Auteur . - 2011 . - pp. 105-108. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 1 (Janvier 2011) . - pp. 105-108 Mots-clés : Clays Apparent cohesion Failure criterion Friction Overconsolidated states Laboratory tests Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Several geotechnical engineering constructions subject the soil to a partial stress reduction. In addition, in practice, often both axisymmetric and nonaxisymmetric conditions can apply in different locations in the ground affected by the construction. In general, the corresponding stress states at failure will be, therefore, overconsolidated and cover a wide domain of the space of the principal stresses. However, the classic failure criteria typically fail to reproduce the observed failure envelope in wide range of stresses. In this note, the original and modified Lade’s criteria are validated and compared against recent data on Pisa clay at general overconsolidated stress states, in compression and extension. A generalization of the modified Lade’s criterion at overconsolidated clays is also proposed. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i1/p105_s1?isAuthorized=no

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