Theory of Deformation of a Porous Viscoelastic Anisotropic Solid
of consolidation and the settlement of foundations 2-6 porous, or multiphase sys- tion and dynamic response from creep data,” Proceedings of the
Creep Theory of Anisotropic Solids J Rheol 25, 565 (1981); 10 1122/1 549631 Mechanics of Incremental Deformations: Theory of Elasticity and Viscoelasticity of Initially Stressed Solids and Fluids Phys Today 18, 68 (1965); 10 1063/1 3047001 Theory of Elasticity and Consolidation for a Porous Anisotropic Solid
consolidation in earth-dams A common framework for (soil or concrete) is assumed to be a multiphase porous creep and shrinkage and other variation of material parameters due to
references), which applies to general multiphase media such as gas mixtures, fluid mixtures, bubbly liquids, suspensions, and alloys With respect to the problem of soil consolidation, Biot's three-dimensional theory has been the basis of most subsequent works in geophysics, soil, and rock mechanics [12-14] The theory has since
pores This indicates that the primary consolidation and creep occur simultaneously In Hypothesis A, the model parameters related to the primary consolidation are calibrated based on the total deformation, which incorporates the creep deformation Therefore, it is a phenomeno-logicalmethod, whichcannotinterpretthe realdeformationmecha-
A three-dimensional model of the medium was created describing the thermal consolidation of a porous have been created Soil is a multiphase medium A mathematical creep model of a po-
the displacement of a porous-solid skeleton is modelled by a standard FEM, while uid pure pressures are included as element{free nodes Another mesh-less strategy by Wang et al [19,20]), based on PIM or radial PIM, has also been applied to solve Biot's consolidation problem for elastic material under in nitesimal strain,
layer of porous chalk (n = 40-50 ) at a 3000 m depth After the creep behaviour of chalks, and the effects of the wettability of the chalks, which are an Consolidation curves of Lixhe chalk during oedometric tests : (a) Casagrande's method,
en
Key words: constitutive modelling, creep, multiphase chalk, oil-water suction, osmotic technique, consolidation and the complete dissipation of pore pres-
Soil Foundation
In this paper two rate dependent constitutive models for porous chalks are presented The common Lixhe chalk: consolidation (creep) curves showing suction dependency [after DE tially and Multiphase SAturated CHALKs Fluid- skele-
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contrast, for chalk with 15 porosity from the same reservoir, ? ranges stress) to that of ? during elastic deformation caused by pore pressure buildup, for If creep can be disregarded during this elastic strain, an coefficient for 3D consolidation theory of the elastic behaviour of multiphase materials: Journal of the
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