采用圆孔扩张理论解析计算和有限元数值模拟计算对PHC管桩单桩和群桩的挤土效应进行了分析和研究，并同时研究了PHC管桩的挤土效应对CFG桩和搅拌桩的影响，在此基础上进行的不同桩型施工顺序的优化。%This paper uses analytical calculation of column cavity expansion and finite element numerical simulation to analyze and study the squeezing effect of the single pile and grouped piles of PHC pile. At the samen time, it studies the effect of squeezing effect of PHC pole on the CFG pile and mixing pile. Based on this, the construction sequence of the piles with different types is optimized.
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