CFG桩处理公路软基施工工艺与沉管挤土效应

Construction technology of CFG pile treating highway soft base and pipe sinking compaction effect

阐述了CFG桩复合地基处理高速公路软土地基的设计思路和振动沉管的施工工艺,将沉管过程视为圆孔扩张过程,借助圆孔扩张的理论解答提出了沉管的影响范围,并讨论了沉管引起的超静孔压的分布和对成桩质量的影响。

The design thinking of CFG pile treating highway soft base and vibration pipe sinking eonstruction technology were illustrated. The pipe sinking process was regarded as round hole expansion process, the influencing scope of pipe sinking were proposed in virtue of round hole expansion theory, the distribution of super proper hole pressure and its influences on the piling quality were discussed.