CFG pile has the characteristics of simple construction method, easy to operate, short construction period and low cost, so it is widely used in foundation treatment of second and first class buildings. But in the design, to optimize the design, the CFG pile composite foundation design should not absolutely follow the recommendations of survey report, but should be based on the stratum situation disclosed in drilling and the composite foundation bearing capacity values with the design requirements.%水泥粉煤灰碎石桩（CFG桩）具有施工方法简单、易于操作、工期短、造价低廉的特点，因此在乙类建筑和甲类建筑的地基处理中得到广泛应用。但是在设计时，不应全部根据勘察报告的建议进行水泥粉煤灰碎石桩（CFG桩）复合地基设计，而应根据钻孔所揭露的地层情况以及设计要求的复合地基承载力特征值，具体问题具体分析，优化设计。
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