2-D frost action modeling using the segregation potential of soils

Konrad, Jean‐Marie; Shen, Mengmeng

doi:10.1016/0165-232x(95)00028-a

Cited by 56 publications

(26 citation statements)

References 11 publications

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“…Miller et al, 1978;Konrad and Shen, 1996;Chamberlain and Gow, 1979). Among these works, particular interest for this research are the studies focused on the presences of unfrozen water in frozen soils and the associated cryogenic suction (e.g.…”

Section: Introductionmentioning

confidence: 98%

Numerical Modeling of Frozen Soils

Shastri

Sánchez

2014

Geo-Congress 2014 Technical Papers

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A vast portion of the exposed land surface is covered by perennially frozen ground in the form of permafrost covers. Some typical problems associated with these frozen soils, amongst others are freezing of foundations; frost heaving and thaw settlement. These phenomena affect civil infrastructure and buildings in these permafrost regions. The void spaces in frozen soils are partially filled by ice and by unfrozen water. The amount of unfrozen water in a frozen soil depends on a number of factors, such as: freezing temperature, type of soil and pore size. A good understanding of the water transfer process in frozen soils and its interaction with the mechanical and thermal behaviors, are crucial for an accurate assessment of the behavior of these soils. The flow of unfrozen water in frozen soils can be explained using the concept of unsaturated water flow in soils utilizing the concept of cryogenic suction (i.e. difference between the ice and liquid pressures). This paper focuses mainly on the transfer of unfrozen water in frozen soils and its modeling. The approach is based on a formulation for unsaturated soils, which has been adapted to the particular conditions of frozen soils. Laboratory tests related to the flow of unfrozen water in permafrost is analyzed and discussed.

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Section: Introductionmentioning

confidence: 98%

Numerical Modeling of Frozen Soils

Shastri

Sánchez

2014

Geo-Congress 2014 Technical Papers

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“…Extensive research has been conducted, especially during the 1970s and 1980s, to develop practical methods to estimate frost heave using simple equations. For example, the segregation potential method is an experimental approach to estimate frost heave using the confining pressure, temperature gradient, and segregation potential, which reflects the soil characteristics (Konrad and Morgenstern, 1984;Konrad and Shen, 1996). In Japan, Takashi (Takashi et al, 1978) proposed a practical equation to estimate frost heave based on numerous one-dimensional (1D) indoor experiments.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional frost heave evaluation based on practical Takashi's equation

Zheng

Kanie

Niu

et al. 2015

Cold Regions Science and Technology

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“…However, various parameters are required for estimation, which has made the simulation model for frost heave rather complicated (Razaqpur et al 1996, Selvadurai et al 1999, Taber 1992. The segregation potential method is an experimental approach to estimate frost heave that uses the confining pressure, temperature gradient, and segregation potential to reflect the soil characteristics (Konrad 1984, Konrad 1996. The use of the Takashi's equation results in a very practical method for frost heave estimation that uses three constants representing the soil characteristics.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Practical Evaluation Method of Three-dimensional Frost Heave of Frozen Soil

Kanie¹,

Zheng²,

Takahashi³

et al. 2013

Iscord 2013

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Various models have been proposed for frost heave estimation. However, a practical evaluation method for multi-dimensional deformation has not yet been established. This study aimed to discuss the possibility of expanding an existing evaluation method into three dimensions based on previous experience on simulating interactive behavior between an underground structure and frost heave. Takashi's equation was adopted among several frost heave models considered; this model has been used to estimate one-dimensional frost heave according to the Japanese Geotechnical Standard. However, it is applicable only for one-dimensional frost heave. The authors developed a new apparatus to measure three-dimensional frost heave to apply Takashi's equation to multi-dimensional heave, and a modified equation was proposed based on the experimental results. Considering the effect of anisotropic properties on frost heave, this proposal was adopted for a simulation program by coupling the heat transfer calculation and mechanical equilibrium analysis in a finite element method (FEM) model. The fundamental simulation results are presented in this paper as an example to confirm the proposed model's applicability.

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2-D frost action modeling using the segregation potential of soils

Cited by 56 publications

References 11 publications

Numerical Modeling of Frozen Soils

Numerical Modeling of Frozen Soils

Three-dimensional frost heave evaluation based on practical Takashi's equation

Experimental and Practical Evaluation Method of Three-dimensional Frost Heave of Frozen Soil

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