ANISOTROPIC STRESS-STRAIN RELATIONSHIP OF CLAY AND ITS APPLICATION TO FINITE ELEMENT ANALYSIS

概要

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Anisotropically consolidated natural deposits of clay show the stress-strain responses in different ways for the cases of active and passive loadings. This is caused by the anisotropy in initial stress states of normally consolidated or overconsolidated clays. Incremental stress-strain relations of anisotropically preconsolidated clays are derived from their consolidation and dilatancy characteristics with the help of associated flow rule. Obtained stress-strain relations give reasonable explanations to the anisotropy in mechanical behaviour of anisotropically preconsolidated clays. Integrations of the incremental stress-strain relations give the stress-strain relations under specified loading conditions or some restrictions on the deformation of clay.The finite element analysis may be one of the powerful means to analyse the stress and strain fields in clay layers consolidated anisotropically in which there exist two different patterns of stress-strain response due to the loading systems, active and passive. As an example, the stress and strain fields in normally and anisotropically consolidated clay layers stressed by a uniform strip load are computed with the finite element technique using the above mentioned anisotropic stress-strain relations.
社団法人地盤工学会の論文
1975-12-15