深水倾斜裸岩大直径钻孔桩施工技术

摘要

During the construction of pontoon erection to connect drilling platform, the hydraulic vibrohammer of 300t was used for inserting of steel casing. For lacking of red earth required for drill grouting in Guang'an area,the muck-dredging barrel was adopted.%文章以兰渝铁路渠江特大桥的工程实践为例,详细地介绍了桩基的地质状况、大直径超长钻孔桩施工方案以及搭设浮桥连接钻孔平台、钢护筒跟进施工、捞碴筒辅助措施等施工工艺.