应用量纲分析方法建立了黄土地基强夯地面变形和夯后地基性状的量纲方程。利用有关工程实测资料,建立了强夯地面变形及夯后地基性状估算的最佳拟合方程,包括:强夯时夯坑深度及场地平均夯沉量与土质参数和施工工艺参数之间、强夯后部分土性指标与施工参数和夯前土质条件之间、夯后部分土性指标与夯击时地面变形和夯前土质条件之间的方程。最后,用若干实例对所建立的方程进行了验证;结果表明,计算结果与实测结果较吻合。方程的建立为夯前定量预估黄土地基强夯时的地面变形和夯后土性提供了一种实用途径。
Through the method of dimensional analysis, the dimension equations of the loess ground deformation of dynamic compaction and the estimation of tamped ground properties are established. Based on the field data obtained from previous practices of dynamic compaction, the fitted equations of both the loess ground deformation of dynamic compaction and the estimation of tamped ground properties are also established, including the fitted equation of the crater depth, the average enforced settlement, the soil parameters and construction parameters during dynamic compaction, the equation of main ground properties, construction parameters after heavy tamping and soil properties before tamping, the equation of main ground properties after tamping, ground deformation during dynamic compaction and soil condition before tamping. Finally, the equations are verified by several project examples, and the results indicate that the calculated results agree well with experimental results. These equations provide a practical way for the prediction of surficial deformation of loess ground during dynamic compaction and the ,,round properties after heavv tamning.