桩基础适用于地下水位较低的和复杂且常需护壁的地质情况,施工中往往由于工艺不当,断桩、堵管、夹泥、蜂窝、少灌等质量问题也时有发生。我省地处青藏高原,复杂的地质状况使得在大桥基础在形式上对桩基础的应用非常广泛,特别是钻孔灌注桩适用于地下水位较低的和 The pile foundation is suitable for the geological conditions of low groundwater level and complicated and often needing to protect the wall. Quality problems such as broken pile, plugging pipe, mud, honeycomb and shallow irrigation are often occurred during construction. The province is located in the Qinghai-Tibet Plateau, the complex geological conditions make the foundation of the bridge in the form of pile foundation is widely used, in particular, bored piles for groundwater level lower and