A potential new frost heave mechanism in high-speed railway embankments
发布时间：2026-08-10
点击次数：
DOI码：10.1680/geot.13.P.042
发表刊物：Géotechnique
关键字：embankments; ground freezing; numerical modelling; pore pressures; snow ice and frost
摘要：Substantial frost heave has been observed in coarse fills in high-speed railway embankments. These coarse fills have very low water contents, and are located above the groundwater table. In an attempt to explain the unexpected frost heave, it is proposed that cyclic train loads cause the development of excess pore water pressure in the underlying subgrade soil, and hence ‘pump’ up the water table to the frost front, which in turn feeds the formation of ice and results in continuous frost heave. A simple quantitative model is then developed to simulate the pumping enhanced frost heave. The numerical results show that the proposed mechanism can indeed provide a rational explanation for the otherwise unexpected frost heave. The engineering implications of this new frost heave mechanism are also discussed, in the context of designing frost heave mitigation measures in seasonally frozen regions.
合写作者：S. ZHANG, F. NIU, G. CHENG
第一作者：D. SHENG
论文类型：期刊论文
卷号：64
期号：2
页面范围：144-154
是否译文：否
发表时间：2013-10-23
附件：
A potential new frost heave mechanism in high-speed railway.pdf