在清华大学已完成的模型的模拟试验基础上 ,对地基经两个冻 -融循环进行离心模拟的重复试验 ,两个重复试验数据几乎一致表明该套寒区离心模型试验装置和测试系统是可行和可靠的 ;相同条件下有荷和无荷地基在冻 -融循环下重复试验显示 ,适当的荷载可抑制地基冻胀 ;自由冻胀量与实际相符 ;地基内温度变化情况和相应的冻胀融沉特征相同、数据相近 ,说明试验数据正确 Based on the simulation experiments of the completed model of Tsinghua University, the centrifuge simulation test of the ground through two freeze-thaw cycles was repeated. The data of the two replicate experiments are almost identical, which indicates that the centrifuge model test device and the test system are feasible And reliable. Under the same conditions, repeated tests on the frozen and thawed soils with and without ground load showed that proper loading can restrain the frost heave of the foundation. The free frost heaving volume is in line with the actual situation. The temperature change in the foundation and the frost heaving Thaw sinking characteristics are the same, the data are similar, indicating that the test data is correct