大直径桩基两次成孔法在桥梁基桩中的应用

The application of large diameter pile foundation twice pore-forming method in bridge foundation pile

针对大直径桩基施工中效率较低、成孔时间长、易造成孔壁坍塌的缺点,通过工程实例阐述了大直径桩基施工两次成孔法的优势,对于提高成孔效率、降低孔壁坍塌有着明显的效果,可为同类工程施工提供经验。

Aiming at the disadvantages of low efficiency and long pore-forming time resulting in the collapse of wall of hole in large diameter pile foundation construction, by engineering practice, the advantages of large diameter pile foundation construction twice pore-forming method were explained, which had obvious effect on improving pore-forming efficiency and reducing collapse of wall of hole, can provide experience for similar engineering construction.