Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A model for frost heave including overburden
Abstract A mathematical model for coupled mass and energy transfer in freezing soils has been developed that accounts for the effects of overburden. Heaving is allowed to occur wherever the ice pressure is at least as large as the overburden. The ice pressure is calculated from the temperature and water pressure using the generalized Clapeyron equation. The one-dimensional energy and mass balances are solved using a fully implicit, Galerkin procedure. The model predicts the observed rapid decline of heave rate with increasing overburden. Comparisons of predictions with the recent data by Penner and Ueda indicate that the model predicts too much heave at low overburdens and too much heave at high temperature gradients. There is apparently some other mechanism for limiting heave when a thin frozen fringe is expected between the freeze front and the lens. In order to match the experimental heave, the thickness of the frozen fringe had to be increased by about one mm. in addition to that normally predicted by the model.
A model for frost heave including overburden
Abstract A mathematical model for coupled mass and energy transfer in freezing soils has been developed that accounts for the effects of overburden. Heaving is allowed to occur wherever the ice pressure is at least as large as the overburden. The ice pressure is calculated from the temperature and water pressure using the generalized Clapeyron equation. The one-dimensional energy and mass balances are solved using a fully implicit, Galerkin procedure. The model predicts the observed rapid decline of heave rate with increasing overburden. Comparisons of predictions with the recent data by Penner and Ueda indicate that the model predicts too much heave at low overburdens and too much heave at high temperature gradients. There is apparently some other mechanism for limiting heave when a thin frozen fringe is expected between the freeze front and the lens. In order to match the experimental heave, the thickness of the frozen fringe had to be increased by about one mm. in addition to that normally predicted by the model.
A model for frost heave including overburden
Hopke, S.W. (Autor:in)
Cold Regions, Science and Technology ; 3 ; 111-127
01.01.1980
17 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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