本文对压桩挤土效应方面的研究成果进行了综述，重点讨论了室内和现场试验、圆孔扩张理论、有限元计算的研究概况。
In this paper research results are reviewed on compaction effect of jacked pile, specially on in-situ and laboratory experiments, the theory of cavity expansion and finite element method.
分析了软土地基中静压桩的挤土效应机理，依据圆孔扩张理论和有效应力原理，推导出塑性区影响范围、桩对土体的挤压应力、孔隙水压力估算公式等。
The radius of plastic area, the maximum compress stress caused by driving pile , and the pore water stress can be concluded by using the cavity expansion method and the effective stress theory.
分析了软土地基中静压桩的挤土效应机理，依据圆孔扩张理论和有效应力原理，推导出塑性区影响范围、桩对土体的挤压应力、孔隙水压力估算公式等。
The radius of plastic area, the maximum compress stress caused by driving pile , and the pore water stress can be concluded by using the cavity expansion method and the effective stress theory.
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