CFG桩长螺旋钻机压灌混凝土入岩质量控制要点

On quality control points for press-grouting concrete embedded rock of long spiral driller of CFG pile

对比分析了CFG桩常用的几种施工方法的优点,针对CFG桩长螺旋钻机入岩成孔问题,从改进钻机和施工工艺两方面进行了探讨,介绍了改进方法,并阐述了施工过程中质量问题产生的原因及相应控制措施,为今后CFG桩施工提供了借鉴。

The paper compares and analyzes some advantages of the common construction methods of CFG pile, explores the improvement of the driller and the enhancement of the construction craft based on the embedded rock and hole of the long spiral driller of CFG pile, introduces the improvement methods, and illustrates the reasons for the quality problems in the construction process and respective controlling measures, so as to provide reference for future CFG pile construction.