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基于刚性冰模型,应用有限差分法离散方程组,对于饱和颗粒土开放系统的冻结过程进行了一维数值模拟,给出了冻结缘内参数的分布.计算过程中修正了刚性冰模型中分凝冰产生条件,提出以冻结缘内冰压与载荷的关系作为分凝冰产生的判据,计算得到的冻胀量与实验室冻胀实验的测量数据较为吻合.将计算结果与现场实测资料进行了比较,温度场、含水量分布等结果在分布规律方面与现场实测资料相符.
Based on the rigid ice model, the finite difference method was used to discretize the equations, and the one-dimensional numerical simulation of the freezing process of the saturated granular soil open system was carried out. The distribution of the parameters in the frozen edge was given. In the calculation process, The paper puts forward that the relationship between the ice pressure and the load in the frozen edge is taken as the criterion for the segregation of ice and the calculated frost heaving quantity is in good agreement with the measured data of the laboratory frost heaving experiment.The calculated results are compared with the measured data in the field In comparison, the results of temperature field, water content distribution and so on are consistent with the field measured data in the distribution law.