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Elastoplastic analysis of jointed rocks using a coupled finite element and boundary element method
Author(s) -
Xiao B.,
Carter J. P.,
Alehossein H.
Publication year - 1994
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/nag.1610180702
Subject(s) - anisotropy , rock mass classification , finite element method , boundary element method , boundary value problem , plane stress , structural engineering , geotechnical engineering , geology , excavation , boundary (topology) , geometry , engineering , mathematical analysis , mathematics , physics , quantum mechanics
This paper presents a coupled, elastoplastic, finite element and boundary element method for the two‐dimensional, non‐linear analysis of anisotropic jointed rock. The non‐linear and anisotropic behaviour of a jointed rock mass is simulated by representing the mass as an equivalent anisotropic, elastoplastic continuum, so that the influence of the jointing system is ‘smeared’ across the continuum, i.e. the individual joints are not modelled as discrete entities. Numerical examples have been solved to verify the capability, accuracy and efficiency of the present technique. The proposed technique has also been applied to the analysis of tunnel excavation problems in plane strain. The effects of anisotropy and non‐linearity of the jointed rock mass during excavation have been investigated in some detail.