谈如何控制人工挖孔扩底桩的设计和施工质量

Discussion on how to control the design and construction quality of artificial dig-hole pile

结合人工挖孔桩特点和工作机理,探讨了如何控制其设计和施工质量,分别阐述了持力层为粘土时桩的沉降计算原则,扩底桩端部处理、井圈护壁设计要点等内容,并提出了施工中应注意事项,以期指导实践。

Combining with the characteristics and working mechanism of artificial dig-hole pile,this paper discussed how to control its construction quality and design,separately elaborated the settlement calculation principle of bearing layer clay pile,bottom expanding pile end treatment,well applied in the circle design points and other contents,and put forward matters needing attention in construction,in order to guide practice.