CFG桩复合地基设计要点

KEY POINTS OF CFG PILE COMPOSITE FOUNDATION DESIGN

结合已有研究成果及工程实践,从CFG桩复合地基设计角度出发,对设计过程中的附加压力、变形计算深度、压缩模量、压缩模量提高系数、地下水等设计要点进行了分析,并探讨了桩长、桩径、桩间距等参数的选取原则,得出桩径越小,经济性越好,但同时相邻桩相互影响问题更加突出等结论。

Based on the existing research results and engineering practice,the key poins of design,such as additional pressure,calculation depth of deformation,compression modulus,coefficient of improvement of compression modulus,and groundwater was analyzed,and the selection parameters of pile length,pile diameter and pile spacing were discussed.It is concluded that the smaller the pile diameter,the better the economy,but at the same time the problem of mutual influence between adjacent piles is more prominent.