Theoretical Study on Thaw Settlement of Saturated Frozen Soil

Abstract:

The consolidation of frozen soil is a coupled action of temperature and deformation. Using moving boundary method and taking the void ratio as a variable, the large strain thaw consolidation mathematical model is built according to Gibson’s large strain consolidation theory and thermal conductivity equation with consideration of phase change. In order to verify the model, a simple example is simulated by FEM software. The result shows that the consolidation range and consolidation rate are decided by the temperature boundary; the change of void and deformation are influenced by pore pressure dissipation and the thaw process in permafrost are delayed by consolidation process.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 155-162
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.155
• Online since: October 2012
• Authors: Feng Ming, Dong Qing Li, Kun Zhang
• Keywords: Frozen Soil, Large Strain, Temperature, Thaw Settlement

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