宁波软土物理力学指标相关性研究

Correlation Analysis of Physical and Mechanical Index of Soft Soil in Ningbo

以宁波10个地铁车站附属工程的地质勘察数据为依托,系统地分析了黏性土体的天然含水率w、孔隙比e、重度γ、压缩系数Es、静止土压力系数K0、抗剪强度指标等土体参数。结果显示:这些参数相关性明显,参数试验结果准确率较高;通过建立静止土压力系数、压缩系数等力学参数与天然含水率的关系公式,可以获得工程设计中常用的计算参数。

Based on the geological investigation data of 10 Ningbo subway stations anxilary works,the soil parameters of clay soil such as natural water content(w),void ratio(e),natural density(γ),compression coefficient(Es),coefficient of earth pressure at-rest(K0)and shear strength index have been systematically analyzed in this paper.The result shows that correlation of these parameters is obvious and the accuracy of parameters test results are very high.And commonly used design parameters in engineering design can be obtained by establishing correlation formula between mechanical parameters like coefficient of earth pressure atrest,compression coefficient and natural water content.