东北地区天然路基冻胀敏感性试验研究

在季节性冻土地区，土壤的冬冻春融往往是路基被破坏的重要因素，因此，对季冻区土壤冻胀敏感性研究有着重要的意义。将取自东北季节性冻土地区具有代表性的土样进行闭式冻胀试验，并求出其冻胀率。根据试验结果绘制冻胀率η-含水率w关系曲线，通过线性回归分析得出冻胀率与含水率的关系式。同时，还对土样中含泥率对冻胀性的影响进行了阐述。

Experimental Study on Frost Susceptibility of Natural Subgrade in Northeast China

In seasonal frozen soil area, the soil frozen in winter and thaw in spring is often a fatal factor of subgrade damage, so the study of soil frost susceptibility in seasonal frozen area has a very important significance. Carry out closed frost heave test using the representative soil in seasonal frozen area in Northeast and obtain the frost heaving ratio through experimental results and formula. Sort the data and draw the relationship curve of η-w, getting the relationship between the frost heaving ratio and water content through linear regression analysis. It also makes a simple exposition on the effect of mud content in the sample soil to the frost heaving.