盐渍土强度特性分析

通过对盐渍土室内基本性质及反复冻融循环条件下的试验分析，研究天然盐溃土在多次冻融循环时的强度变化特征，试验结果表明：经多次冻融循环，低液限粘土试样粘聚力自下而上呈线性减小；含砂低液限粘土试样在冻融循环过程中，试样粘聚力呈反S形分布，内摩擦角均呈S形分布；低液限各层粉土试样的粘聚力随着冻融循环次数的增加而逐渐减小，各土层内的摩擦角也随着冻融循环次数的增加而减小。

Strength Characteristic of Saline Soil

Based on the results of testing saline soil and the experiment of freeze-thaw cycle, he characteristic of strength changing of crude saline soil is studied. The result of test shows that he cohesive strength of low liquid-limit clay decreases linearly form bottom to top after repeated reeze-thaw cycle, the cohesive strength distribution of the low liquid-limit clay containing sand is everse S-shaped, and the distribution of the angle of internal friction is S-shaped during freeze-thaw ycle, the cohesive str...