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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 667 - 679 (13page)
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The aim of this paper is to increase the understanding of ice lens initiation and growth in freezing soil. A model describing the growth process of ice lenses in soils has been established. The model presented here, which considers a series of processes, including heat transfer, water migration, phase change, ice lens formation, soil deformation, is solved by the use of a transient finite element. The simulated results agree with the experimental data. Results show that: (1) Negative pore water pressure occurs in unfrozen areas, this result in the water transfers from the unfrozen zone to the frozen zone and substantial water was stored in the frozen zone which results in oscillation with in water content distributions. (2) Few segregation ice lenses appeared in the fast freezing section, several thin and discontinuous segregation ice lenses appeared in the transitional section, and thick ice lenses appeared in the third phase when the freezing front tended to be stable. (3) Both the consolidation process and the expansion process are in progress during the freezing process, due to the migration of unfrozen water. (4) The frost heave model is composed of two aspects: the coupled heat-mass transport and the growth of ice lens. Numerical modeling is able to represent the development of both the thermal field and ice segregation observed in the physical models.
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참고문헌 (34)
참고문헌 신청
Akagawa, S. / 2009 / Tensile strength of frozen soil in the temperature range of the frozen fringe / Cold Regions Science and Technology 57:13~22
Akagawa, S. / 2006 / Effects of tensile strength on ice lens initiation temperature / Proceedings of the 13th International Conference on cold region engineering :1~12
Azmatch, T. F. / 2011 / Tensile strength and stress-strain behavior of Devon silt under frozen fringe conditions / Cold Regions Science and Technology 68:85~90
Azmatch, T. F. / 2012 / New ice lens initiation condition for frost heave in fine-grained soils / Cold Regions Science and Technology 82:8~13
Bronfenbrener, L. / 2010 / Modeling frost heave in freezing soils / Cold Regions Science and Technology 61:43~64
Akagawa, S. / 2006 / Effects of tensile strength on ice lens initiation temperature / Proceedings of the 13th International Conference on cold region engineering :1~12
Azmatch, T. F. / 2011 / Tensile strength and stress-strain behavior of Devon silt under frozen fringe conditions / Cold Regions Science and Technology 68:85~90
Azmatch, T. F. / 2012 / New ice lens initiation condition for frost heave in fine-grained soils / Cold Regions Science and Technology 82:8~13
Bronfenbrener, L. / 2010 / Modeling frost heave in freezing soils / Cold Regions Science and Technology 61:43~64
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