Composite foundation of CFG piles is a lately developing technique in ground treatment and characterized by great bearing capacity

little settlement in ground treatment

wide scope of application

low cost

convenient construction

etc. The consolidation mechanism and settlement form of composite foundation of CFG piles

are elaborated. Analysis of settlement was discussed in detail including computing thickness

influential factors

modulus of compressibility choice and computation of additional pressure

etc. Although some merits were put forward based on the theory of settlement control while computation of settlement

there are a lot of works to be done.