Characterization of Failure in Cross-Anisotropic Soils

Abelev, Andrei; Lade, Poul V.

doi:10.1061/(asce)0733-9399(2004)130:5(599)

Cited by 93 publications

(60 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since the material behaviour and failure constitute crucial issues in many geotechnical problems, various theories and failure criteria have been developed (Graham & Houlsby, 1983;Duveau et al, 1998;Abelev & Lade, 2004;Lade, 2007). Concerning the material rupture, it is commonly accepted that damage and localised deformation appear before the failure in many cases.…”

Section: Introductionmentioning

confidence: 99%

Shear banding modelling in cross-anisotropic rocks

Pardoen

Seyedi²,

Collin

2015

International Journal of Solids and Structures

View full text Add to dashboard Cite

Sedimentary geomaterials such as rocks frequently exhibit cross-anisotropic properties and their behaviour depends on the direction of loading with respect to their microstructure. As far as material rupture is concerned, localised deformation in shear band mode appears generally before cracks and material failure. cavation fractured zone that develops around a gallery is strongly influenced by the material anisotropy.

show abstract

Section: Introductionmentioning

confidence: 99%

Shear banding modelling in cross-anisotropic rocks

Pardoen

Seyedi²,

Collin

2015

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…Oda et al 1978;Tatsuoka et al 1990, Alshibli andSture 2000;Wanatowski and Chu 2006), directional shear cells (Phillips and May 1967;Oda and Konishi 1974a, b;Wong and Arthur 1985), true triaxial apparatuses (Arthur and Menzies 1972;Yamada and Ishihara 1979;Ochiai and Lade 1983;Miura and Toki 1984;Abelev and Lade 2004) and hollow cylinder apparatuses (e.g., Symes et al 1988;Miura and Toki 1986;Vaid et al 1990;Gutierrez et al 1991;Nakata et al 1998;Rolo 2003;Lade et al 2008;Cai et al 2013). …”

Section: ! Introductionmentioning

confidence: 99%

Experimental investigation on the deformation characteristics of granular materials under drained rotational shear

Yang

et al. 2015

Geomechanics and Geoengineering

View full text Add to dashboard Cite

Abstract:! This paper presents an experimental investigation revisiting the anisotropic stress-strainstrength behaviour of geomaterials in drained monotonic shear using Hollow Cylinder Apparatus. The test program has been designed to cover the effect of material anisotropy, preshearing, material density and intermediate principal stress on the behaviour of Leighton Buzzard sand. Experiments have also been performed on glass beads to understand the effect of particle shape. This paper explains phenomenological observations based on recently acquired understanding in micromechanics, with attention focused on strength anisotropy and deformation non-coaxiality, i.e., non-coincidence between the principal stress direction and the principal strain rate direction. The test results demonstrate that the effects of initial anisotropy produced during sample preparation is significant. The stress-strain-strength behaviour of the specimen shows strong dependence on the principal stress direction. Pre-loading history, material density and particle shape are also found to be influential. In particular, it was found that non-coaxiality is more significant in preloaded specimens. The observations on the strength anisotropy and deformation non-coaxiality were successfully explained based on the Stress-

show abstract

“…Nakata et al, 1998;Yoshimine et al, 1998) and ö9 becomes smaller (e.g. Tatsuoka et al, 1986;Lam & Tatsuoka, 1988;Abelev & Lade, 2004). Given that the direction of ó 9 1 varies significantly inside the collapse mechanism, the inherent anisotropy of the sand should have a significant impact on the bearing capacity of a footing.…”

Section: Introductionmentioning

confidence: 99%

Effect of relative density and stress level on the bearing capacity of footings on sand

Loukidis¹,

Salgado²

2011

Géotechnique

View full text Add to dashboard Cite

The design of shallow foundations relies on bearing capacity values calculated using empirical procedures that are based in part on solutions obtained using the method of characteristics, which assumes a soil that is perfectly plastic following an associated flow rule. In this paper the problem of strip and circular footings resting on the surface of a sand layer is analysed using the finite-element method. Analyses are performed using a two-surface plasticity constitutive model that realistically captures the aspects of the mechanical response of sands that are relevant to the bearing capacity problem. In particular, the model accounts for non-associated flow, strain-softening, and both stress-induced and inherent anisotropy. Based on the results of the analyses, the paper examines the validity of the bearing capacity factors N ª and shape factors s ª used in practice. A relationship for determining appropriate values of friction angle for use in bearing capacity calculations is also proposed.KEYWORDS: anisotropy; bearing capacity; footings/foundations; numerical modelling; plasticity; sands L'étude de fondations peu profondes repose sur des valeurs de force portante calculées en utilisant des procé-dures empiriques, basées en partie sur des solutions obtenues avec la méthode des caractéristiques, qui pré-suppose la présence d'un sol parfaitement plastique en suivant une règle d'écoulement connexe. Dans la présente communication, on a analysé le problème de semelles filantes et circulaires posées sur la surface d'une couche de sable, avec la méthode aux éléments finis. Des analyses ont été effectuées en utilisant un modèle constitutif de plasticité de deux surfaces, exprimant, de façon réaliste, les aspects de la réaction mécanique des sables dans le contexte du problème de la force portante. Ce modèle se penche notamment sur le débit non associé, sur le radoucissement, ainsi que sur l'anisotropie par pression et inhérente. Sur la base des résultats des analyses, la communication examine la validité des facteurs de force portante N ª et des facteurs de forme s ª utilisés dans la pratique. En outre, on propose également un rapport pour la détermination de valeurs appropriées de l'angle de frottement pour les calculs de la force portante.

show abstract

Characterization of Failure in Cross-Anisotropic Soils

Cited by 93 publications

References 26 publications

Shear banding modelling in cross-anisotropic rocks

Shear banding modelling in cross-anisotropic rocks

Experimental investigation on the deformation characteristics of granular materials under drained rotational shear

Effect of relative density and stress level on the bearing capacity of footings on sand

Contact Info

Product

Resources

About