工程降水引起的前期固结压力增长对软土工程性质影响的试验研究

本文通过cu试验，以上海第三层淤泥质粉质粘土和第四层淤泥质粘土为试验对象，研究了工程降水引起的前期固结压力的增长对软土工程性质的影响。试验结果表明降水后的土体，其内聚力有较大程度的提高，内摩擦角则基本不变，而且在相同的应力水平下，与降水前的土体相比，表现为较小的应变和变形。

The influences of the increased preconsolidation pressure,induced by engineering precipitation on the quality of soft soil construction are studied through the teats of the 3rd layer mucky silty clay and the 4th layer mucky clay in Shanghai. The outcomes indicate the cohesion of the soil mass enhanced after precipitation with its angle of internal friotion unchanged. Compared with the soil mass before precipita tion, under the same stress, its strain and deformation are smaller.[