摘要
影响饱和土冻结过程的因素很多而且复杂,本文采用刚性冰模型对于持续补水的饱和颗粒土的冻结过程进行了一维数值模拟,分析了外载、导水系数以及土的持水性对于冻结过程以及冻胀的影响,计算结果表明外载增加使得冻胀速度降低,较大的导水系数以及较好的持水性导致分凝冻胀量较大。
The freezing process of saturated soil is influenced by many factors. In this paper, we simulate the freezing process in saturated, granular, solute-free soil, based on the rigid ice model, and then analyze the influence of load, hydraulic conductivity and soils＇ water-holding ability to the freezing process and frozen heave. The calculation results show that the augment of load tends to reduce the growing rate of the frost heave and the segregated heave is greater if soil hold larger hydraulic conductivity and stronger water-holding ability.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2007年第1期128-130,共3页
Journal of Engineering Thermophysics
基金
中国科学院知识创新工程重大项目(No.KZCX1-SW-06)
自然科学基金项目资助(No.40501017)
关键词
冻胀
刚性冰模型
数值模拟
frost heave
rigid ice model
numerical simulation
