超长钻孔灌注桩的关键施工技术

Critical Construction Technology of Extra Long Bored Pile

以滨州黄河公路大桥直径 1 .5 m、深度 1 2 3 .5 m的钻孔桩为例 ,从钻机选择、钻孔方法确定、施工工艺及质量控制检测几个方面 。

Taking the 1.5 m diameter, 123.5 m depth piles of Binjou yellow river highway bridge for example,this paper introduces the critical construction technology of the extra long pile.