钻孔灌注桩具有施工简便、适应各种地质条件、造价低和承载力大的优点。结合上海青草沙水库取水泵站工程,详细阐述了钻孔灌注桩工艺流程、关键施工技术措施、允许偏差及材料质量要求等,并对塌孔、钻孔漏浆、钢筋笼变形、断桩等质量问题提出防治措施。 Bored pile with simple construction, to adapt to a variety of geological conditions, low cost and bearing capacity advantages. Combined with the project of Shanghai Qingcaosha Reservoir Pumping Station, the technical process of drilling and pouring pile, the key construction technical measures, the allowable deviation and material quality requirements are described in detail, and the effects of collapse hole, leakage of drilling hole, deformation of steel cage, broken pile and so on Quality problems put forward prevention measures.