飞云江三桥超长大孔径卵石层钻孔灌注桩施工

The construction of bored cast-in-situ pile with super-long large pore diameter in pebble bed in Feiyunjiang No.3 bridge

结合飞云江三桥钻孔灌注桩施工的工程及水文地质概况,介绍了钻孔平台的设计,详细地阐述了钻孔的施工工艺,探讨了钻孔过程中遇到的问题及解决方法,以提高超长大孔径卵石层钻孔灌注桩的施工质量。

Combined with general engineering condition and hydrogeological condition of bored cast-in-situ pile,construction in Fdyunjiang No. 3 bridge, this paper introduces the design of drilling platform, illustrates the construction technology of drilling, and discusses the problems met in drilling process and their solutions, in order to increase construction quality of bored cast-in-situ pile with super-long large pore diameter in peddle bed.