[article] 
inGéotechnique > Vol. 60 N° 3 (Mars 2010) . - pp. 223–226

Titre :	Stress–dilatancy relation for Mohr–Coulomb soils following a non-associated flow rule
Type de document :	texte imprimé
Auteurs :	J. Zhang, Auteur ; R. Salgado, Auteur
Année de publication :	2011
Article en page(s) :	pp. 223–226
Note générale :	Génie Civil
Langues :	Anglais (eng)
Mots-clés :	Constitutive relations Failure Shear strength Friction Deformation
Index. décimale :	624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes
Résumé :	Rowe's stress–dilatancy relation for frictional (cohesionless) materials has been a cornerstone of soil mechanics. The original derivation of this relationship was based on incorrect energy minimisation considerations, but the relationship was proven later by De Josselin de Jong using friction laws, and has been confirmed by a large body of experimental results. In contrast, the validity of Rowe's stress–dilatancy relation for cohesive-frictional materials, which has also been used, although not as extensively, was never verified. This paper shows that Rowe's stress–dilatancy relation for Mohr–Coulomb soils (cohesive-frictional materials) is in fact incorrect. The paper also provides a correct stress–dilatancy relationship for non-associated Mohr–Coulomb soils that have both cohesive and frictional strength components. The derivation of the relationship for cohesive-frictional soils presented in this paper relies on use of the sawtooth model together with the application of the laws of friction.
DEWEY :	624.15
ISSN :	0016-8505
En ligne :	http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.t.039

[article] Stress–dilatancy relation for Mohr–Coulomb soils following a non-associated flow rule [texte imprimé] / J. Zhang, Auteur ; R. Salgado, Auteur . - 2011 . - pp. 223–226.
Génie Civil
Langues : Anglais (eng)
in Géotechnique > Vol. 60 N° 3 (Mars 2010) . - pp. 223–226

Mots-clés :	Constitutive relations Failure Shear strength Friction Deformation
Index. décimale :	624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes
Résumé :	Rowe's stress–dilatancy relation for frictional (cohesionless) materials has been a cornerstone of soil mechanics. The original derivation of this relationship was based on incorrect energy minimisation considerations, but the relationship was proven later by De Josselin de Jong using friction laws, and has been confirmed by a large body of experimental results. In contrast, the validity of Rowe's stress–dilatancy relation for cohesive-frictional materials, which has also been used, although not as extensively, was never verified. This paper shows that Rowe's stress–dilatancy relation for Mohr–Coulomb soils (cohesive-frictional materials) is in fact incorrect. The paper also provides a correct stress–dilatancy relationship for non-associated Mohr–Coulomb soils that have both cohesive and frictional strength components. The derivation of the relationship for cohesive-frictional soils presented in this paper relies on use of the sawtooth model together with the application of the laws of friction.
DEWEY :	624.15
ISSN :	0016-8505
En ligne :	http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.t.039