岩溶地区桥梁基础钻孔桩施工技术

Technology of bored pile in bridge foundation construction in karst area

介绍了某大桥通过岩溶地区桥梁基础钻孔桩施工技术 ,从施工方法 ,工程特点、注浆顺序、灌注水下混凝土等方面进行了论述 ,指出只有有效地控制注浆范围 ,严格按规范操作 ,即能保证成孔。

In this paper the construction technology of bored pile is introduced for bridge foundation construction when the bridge passes through karst area. From construction method, engineering features, grouting orders, underwater concrete construction and other aspects detailed discussion is made. Author emphasized that pore forming and pilling quality be ensured only based upon strict and normalized operation and effective control of grouting.