The technology construction of CFG pile composite foundation plays an important role in the construction process of high-speed railway. Trough analyzing the meaning of CFG pile composite foundation, this paper studies and analyzes the working mechanism of bearing capacity of composite foundation and interprets the construction methods for cushion, thus providing reference for high-speed railway construction.%CFG桩复合地基施工技术在高铁建设过程中发挥着重要的作用，本文通过分析CFG桩复合地基的含义，研究分析复合地基受力工作机理，同时对垫层的施工方法进行阐述，进而为高铁施工提供参考依据。
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