STRESS-STRAIN MODEL FOR CLAYS WITH ANISOTROPIC VOID RATIO DISTRIBUTION

Citation
E. Masad et al., STRESS-STRAIN MODEL FOR CLAYS WITH ANISOTROPIC VOID RATIO DISTRIBUTION, International journal for numerical and analytical methods in geomechanics, 22(5), 1998, pp. 393-416
Citations number
20
Categorie Soggetti
Geosciences, Interdisciplinary","Engineering, Civil
ISSN journal
03639061
Volume
22
Issue
5
Year of publication
1998
Pages
393 - 416
Database
ISI
SICI code
0363-9061(1998)22:5<393:SMFCWA>2.0.ZU;2-E
Abstract
The porosity of soils is considered to be a directional measure and it s distribution is characterized by a functional form. This form has be en used to extend the critical state soil mechanics framework to inclu de the effects of structure in soils. A new internal plastic energy di ssipation formulation has been proposed to account for fabric arrangem ent. New expressions for the yield locus, and the plastic stress-strai n response of structural soils have been derived. The applicability of the concepts to model the plastic stress-strain behaviour of a number of soils is illustrated. The advantage of the new model is very well identified in modelling the stress-strain behaviour of K-0 consolidate d and natural clays. (C) 1998 John Wiley & Sons, Ltd.