第二松花江特大桥挖孔桩施工常见问题处理

On treatment of common problems in digging pile construction of secondary Songhuajiang super-large Bridge

对第二松花江特大桥挖孔桩施工工艺进行了介绍，分别阐述了施工准备工作、挖掘方法，支撑护壁做法，混凝土灌注工艺等内容，指出了各分部工序应注意事项，为今后桥梁工程中的挖孔桩施工提供了一定指导。

The paper introduces the construction craft of the digging pile in the secondary Songhuajiang super-large Bridge, illustrates the construction preparation, the excavation methods, the ways of the supporting protection walls, the concrete grouting craft, and points out the precautions for all procedures, so as to provide certain direction for the digging pile construction in future bridge projects. ＇