预施荷载对黏土法向冻胀力的影响分析

Analysis on effect of pre-increasing load on the clay normal frozen-heave force

通过加荷固结稳定后的冻胀试验,分析了上覆荷载对冻胀的影响,得出冻胀与法向冻胀力的产生是相辅相成的,最后,将低液限黏土的法向冻胀力的分级标准与现有规范对比,得出各冻胀性类别的法向冻胀力界限值基本相同。

Based on the frozen-heave test under load after consolidation, the effect of load over on frozen-heave is analyzed and it is concluded that frozen-heave and normal frozen-heave force supplement each other, lastly, by comparing the classification standard of the normal frozen- heave force of low liquid-limit clay with present criterion, it is concluded that the limit values of all kinds of normal frozen-heave forces are almost the same.