To advance the development of CFG pile composite foundation, the three dimensional model was constructed based on FLAC-3D, and in-depth analysis and study was performed for the work character of CFG pile composite foundation.

• 为促进CFG桩复合地基的应用与发展,本文利用FLAC-3D建立三维弹塑性模型,对CFG群桩复合地基的工作性状进行了较为深入的分析与研究,并将最小二乘支持向量机应用于CFG桩复合地基的承载力预测中。