Three dimensional analysis of large strain thaw consolidation in permafrost
Three dimensional analysis of large strain thaw consolidation in permafrost
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DOI：
10.1007/s11440-012-0162-y
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发表时间：
2012-03
期刊：
影响因子：
5.7
通讯作者：
Xiaoliang Yao;Ji-lin Qi;Wei Wu
中科院分区：
文献类型：
--
作者：
Xiaoliang Yao;Ji-lin Qi;Wei Wu
富冰多年冻土融化固结是寒区工程中的一个典型问题。本文对多年冻土后融化区的大应变融化固结问题进行了三维分析，其定义为一个带相变的移动融化边界问题。用数值程序实现了该理论，并将计算结果与融化固结试验结果进行了比较。对于低含水率的问题，小应变和大应变方法提供的结果几乎相同。然而，对于高含水率的问题，大应变理论表现出更好的性能。
Thaw consolidation of ice-rich permafrost is a typical problem in cold regions engineering. This paper proposes a three dimensional analysis of large strain thaw consolidation for post-thawed zone of permafrost, which is defined by a moving thawing boundary problem with phase changes. The theory is implemented in a numerical code and the numerical results are compared with thaw consolidation tests. For problems with low water contents, the small and large strain methods provide virtually the same results. For problems with high water contents, however, the large strain theory shows a much better performance.