FEM Assessment of Large-Strain Thaw Consolidation

Foriero, A.; Ladanyi, B.

doi:10.1061/(asce)0733-9410(1995)121:2(126)

Cited by 40 publications

(18 citation statements)

References 17 publications

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“…The application of large-strain consolidation theory to thaw consolidation was first proposed by Foriero and Ladanyi (1995). However, the innovation of the proposed model lies in the direct integration of heat transfer into the coupled large-strain modelling scheme.…”

Section: Discussionmentioning

confidence: 99%

“…Nonlinear effective stress -void ratio -hydraulic conductivity relationships Determination and characterization of the consolidation properties of thawing soils have scarcely been discussed in previous thaw consolidation studies despite their paramount role to the development of a comprehensive theory of practical engineering relevance (Morgenstern and Nixon 1971;Sykes et al 1974;Foriero and Ladanyi 1995). As shown in eq.…”

Section: Evaluation Of Geotechnical Parametersmentioning

confidence: 99%

“…This solution was nevertheless derived in a small-strain configuration. Subsequently, Foriero and Ladanyi (1995) modelled thaw consolidation using large-strain consolidation theory, which allows for finite strains and accounts for the variation of the hydraulic conductivity and compressibility during consolidation.…”

Section: Introductionmentioning

confidence: 99%

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One-dimensional large-strain thaw consolidation using nonlinear effective stress – void ratio – hydraulic conductivity relationships

Dumais

Konrad

2018

Can. Geotech. J.

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A one-dimensional model for the consolidation of thawing soils is formulated in terms of large-strain consolidation and heat-transfer equations. The model integrates heat transfer due to conduction, phase change, and advection. The hydromechanical behaviour is modelled by large-strain consolidation theory. The equations are coupled in a moving boundary scheme developed in Lagrangian coordinates. Finite strains are allowed and nonlinear effective stress – void ratio – hydraulic conductivity relationships are proposed to characterize the thawing soil properties. Initial conditions and boundary conditions are presented with special consideration for the moving boundary condition at the thaw front developed in terms of large-strain consolidation. The proposed model is applied and compared with small-strain thaw consolidation theory in a theoretical working example of a thawing fine-grained soil sample. The modelling results are presented in terms of temperature, thaw penetration, settlements, void ratio, and excess pore-water pressures.

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Section: Discussionmentioning

confidence: 99%

Section: Evaluation Of Geotechnical Parametersmentioning

confidence: 99%

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One-dimensional large-strain thaw consolidation using nonlinear effective stress – void ratio – hydraulic conductivity relationships

Dumais

Konrad

2018

Can. Geotech. J.

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“…The theory was based on small strain assumption with unavoidable large prediction errors when high ice content was involved. Based on this consideration, taking the void ratio as an independent variable, Foriero and Ladanyi (1995) developed a 1-D large strain thaw consolidation theory. In order to extend the applicability of large strain theory to complex boundary conditions, Yao et al (2012) proposed a three dimensional large strain thaw consolidation theory based on Eulerian description and proved its validity with laboratory test results.…”

Section: Introductionmentioning

confidence: 99%

Thaw consolidation behaviours of embankments in permafrost regions with periodical temperature boundaries

Wang

Yu³

2015

Cold Regions Science and Technology

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“…Foriero and Ladanyi (1995) improved the theory by introducing the onedimensional large-strain consolidation theory proposed by Gibson et al (1967) and a more complex phase-change boundary was also incorporated (Nixon and Morgenstern 1973). However, thaw consolidation of frozen ground is a complex thermo-hydro-mechanical coupling problem and closed-form solutions for this kind of problem are difficult to be obtained by analytical methods.…”

Section: Introductionmentioning

confidence: 99%

A Hypoplasticity-Based Method for Estimating Thaw Consolidation of Frozen Sand

Wang

Liu

2015

Geotech Geol Eng

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Thaw consolidation of frozen ground is one of the main causes for settlement of foundations in cold regions engineering. This paper firstly derived an improved von Wolffersdorff hypoplastic model by incorporating an internal state variable S to represent the cohesive forces of frozen soils. Then the principle of effective stress was enhanced by introducing a new expression of the Bishop Factor based on the water retention curves of fine sand. As for the migration of water during thaw consolidation, a modified Richards' equation was used for porous fluid flow in a saturated or partially saturated soil. Coupled with the heat transfer equation taking into account the ice-water phase change, a numerical method was proposed for analyzing the thermo-hydro-mechanical processes during thaw consolidation of frozen ground. It was numerically implemented in the FISH language on the FLAC platform and was verified by thaw consolidation tests on frozen fine sand samples in laboratory. Results indicate that the calculated results agree in general with test data.

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FEM Assessment of Large-Strain Thaw Consolidation

Cited by 40 publications

References 17 publications

One-dimensional large-strain thaw consolidation using nonlinear effective stress – void ratio – hydraulic conductivity relationships

One-dimensional large-strain thaw consolidation using nonlinear effective stress – void ratio – hydraulic conductivity relationships

Thaw consolidation behaviours of embankments in permafrost regions with periodical temperature boundaries

A Hypoplasticity-Based Method for Estimating Thaw Consolidation of Frozen Sand

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