When the sand soil with interlayer is used as the end bearing layer of the prestressed concrete pipe pile in the construction of a foundation pile,certain pile foundation counterforce failed to meet the design requirement during the construction process. This paper provides insight into the causes of this phenomenon combined with the construction technology of the pile and the condition of the soil layer,and the causes of the phenomenon are analyzed. The factors that affect the quality of the pile foundation are analyzed as well to offer treatment methods.%在某工程基桩的施工过程中,存在夹层的砂土作为预应力混凝土管桩桩端持力层时,个别桩在施工过程中桩基反力不满足设计要求.这种现象结合该桩型的施工工艺和地基土层条件,分析了该现象产生的原因;同时,对影响桩基质量的诸多因素进行了分析,并提出了相应的处理方法.
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