Canadian Geotechnical Journal, Ahead of Print.
A framework for thaw consolidation of fine-grained soils is proposed. The development of the framework is based on the general definition of large-strain consolidation and on the general behaviour of soils upon thawing. The residual stress and the residual stress curve are used in the framework to define the initial thawed state. The concept of the residual stress is generalized to ice-rich soils by specifying that the residual stress is the effective stress within the soil elements upon thawing rather than the effective stress in the bulk soil. The framework is formulated in terms of [math] relationships. The volume change behaviour of ice-poor soils is described by a semi-logarithmic linear [math] relationship. The slope of the [math] relationship is given by the compression index of the thawed soil. For ice-rich soils, a bilinear [math] relationship is adopted. First, drainage of the excess water occurs with no compression of the soil skeleton. Then, water is drained out of the soil upon compression of the soil skeleton in an ice-poor equivalent manner. The e−k v relationship of thawed fine-grained soils is defined by a semi-logarithmic linear curve with a slope defined by the hydraulic conductivity change index of the thawed soil.

中文翻译：

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细粒土解冻固结框架

加拿大岩土工程杂志，印刷前。
提出了细粒土解冻固结的框架。该框架的开发基于大应变固结的一般定义和解冻时土壤的一般行为。框架中使用残余应力和残余应力曲线来定义初始解冻状态。通过指定残余应力是解冻时土壤单元内的有效应力而不是土体中的有效应力，残余应力的概念被推广到富含冰的土壤。该框架是根据[数学]关系制定的。贫冰土壤的体积变化行为通过半对数线性[数学]关系来描述。[数学]关系的斜率由解冻土壤的压缩指数给出。对于富含冰的土壤，采用双线性[数学]关系。首先，在不压缩土壤骨架的情况下排出多余的水。然后，通过以贫冰等效方式压缩土壤骨架，将水从土壤中排出。解冻细粒土壤的 e−kv 关系由半对数线性曲线定义，其斜率由解冻土壤的水力传导率变化指数定义。