软土地基承载力原位测试及其相关性研究

选用平板荷载试验、轻便动力触探试验、十字板剪切试验等三种测试手段,对潭邵公路软土地基承载力进行了研究。通过对测试数据进行统计分析,建立了N10与Cu的回归方程,且其相关系数均在0.9以上,表明二者具有很强的相关性。以Cu-fk关系为桥梁,推导出N10-fk的关系表达式,该公式同时考虑了埋置深度对承载力的影响。该研究为湖南地区同类地基土承载力的确定提供了一种新方法。

A study on in-situ test and correlation of soft foundation bearing capacity

The bearing capacity of soft subsoils of Xiangtan-Shaoyang Expressway is been studied by the methods of slab loading test, the portable dynamic probe test and the cross plate shear test. The N10-Cu regress equation is obtained after analyzing the testing data. The correlation coefficient greater than 0.9 shows that N10 and Cu is highly correlated. The relation expression of N10 and fk is deduced on the basis of Cu-fk equation, where the effect of depth on bearing capacity is taken into account. A new method is put forward to caculate the bearing capacity of the similar subsoils in Hunan district in this paper.