本文分析CFG桩复合地基的作用机理及褥垫层的作用和重要性,褥垫层作为复合地基的核心部分对复合地基受力影响很大,直接影响着复合地基的科学性、合理性及经济性。合理设置褥垫层对提高复合地基承载力、减少沉降变形是非常有利的。 This paper analyzes the mechanism of the CFG pile composite foundation and the role and importance of the cushion. The core part of the cushion foundation as a composite foundation has a great influence on the stress of the composite foundation, which directly affects the scientificity, rationality and economy of the composite foundation. Sex. It is very favorable to set the cushion layer reasonably to improve the bearing capacity of the composite foundation and reduce the settlement deformation.