水泥粉煤灰碎石桩复合地基设计计算探讨

Study of design methods of cement-flyash-gravel pile

CFG桩复合地基是新近发展起来的一项地基处理技术。具有承载力提高幅度大、地基变形小等特点。文章介绍了CFG桩复合地基设计计算时的设计思想、主要计算方法。包括它的适用范围、承载力计算、沉降计算及计算时应注意的问题。对一些主要的计算参数的选择进行了分析,对不同的工程情况提出了不同的取值原则。对设计人员进行设计时有一定的参考意义。

The composite foundation of cementflyashgravel(CFG) pile is a lately developed technique in ground treatment.The bearing capacity of the ground can be raised by a big margin and the ground settlement changes less when the CFG pile is adopted.In this paper,the designing thought and major calculation methods in the design of the composite foundation of CFG pile are introduced including the scope of application,calculation of bearing capacity and settlement,and the major questions to be noticed when designed.The choice of some key parameters in the calculation is studied and the choosing principles are given on the basis of different project conditions. The presented work may be beneficial to the designers related.