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Limit state analysis of earthen slopes using dual continuum/FEM approaches
Author(s) -
Swan Colby C.,
Seo YoungKyo
Publication year - 1999
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/(sici)1096-9853(199910)23:12<1359::aid-nag39>3.0.co;2-y
Subject(s) - finite element method , limit analysis , geotechnical engineering , constant (computer programming) , structural engineering , slope stability , slope stability analysis , limit (mathematics) , dual (grammatical number) , constitutive equation , engineering , mathematics , computer science , mathematical analysis , art , literature , programming language
A framework alternative to that of classical slope stability analysis is developed, wherein the soil mass is treated as a continuum and in‐situ soil stresses and strengths are computed accurately using inelastic finite element methods with general constitutive models. Within this framework, two alternative methods of stability analysis are presented. In the first, the strength characteristics of the soil mass are held constant, and the gravitational loading on the slope system is increased until failure is initiated by well‐defined mechanisms. In the second approach, the gravity loading on the slope system is held constant, while the strength parameters of the soil mass are gradually decreased until well‐defined failure mechanisms develop. Details on applying both of the proposed methods, and comparisons of their characteristics on a number of solved example problems are presented. Copyright © 1999 John Wiley & Sons, Ltd.