长螺旋钻机施工CFG桩常见质量问题及应对措施

Common Quality Problem and Countermeasures on CFG Pile Constructed by Long Spiral Drilling Machine

摘要:

结合一些工程实例，将长螺旋钻机施工CFG桩常见的质量问题归纳为几何形态偏差超标、物理性能破坏失效两类，并从这一角度定性分析了这些问题对复合地基承载力的影响，指出了问题产生的主要原因，给出了常用的应对措施。还从设备和工艺方面提出了改进的建议。

Abstract:

With some project examples, this article put common quality problems of CFG pile into two kinds: the error surpasses the standard stipulation for the geometry size and the physical performance destroyed and expired. And from this point, the influence to the bearing capacity of composite foundation was qualitative analyzed，primary cause of these problems and the countermeasures were put forward, and some suggestions were made on equipment and technology.