深水复杂地质深孔灌注桩施工技术

摘要

Based on the construction of pile foundation of the main bridge of Songhua River No.2 Super Bridge over the river channel,the paper introduces the construction techniques and control points of deep hole bored pile in the complex geological condition of the river bed from the perspectives of equipment selection,boring process,underwater grouting,and quality control.%以松陶铁路第二松花江特大桥主桥（48＋4×80＋48）m跨松花江主河道桩基施工为例,从设备选型,钻孔工艺,水下灌筑以及质量控制等方面,介绍在江底复杂地质条件下,深孔灌注桩基的施工技术及控制要点。