Based on the cylindrical cavity expansion theory, the squeeze stress induced by pile driving in soils around a pile and inside cluster of piles is analyzed.
本文根据圆柱孔扩张理论分析了在单桩周围和群桩内部土中产生的打桩挤压应力，并与室内模型试验和工程实录资料作了比较。
The process of soil-squeezing is similar to cylindrical cavity expansion so that most of interpretation for SBPT is based on the theory of cavity expansion.
由于试验挤土过程与孔扩张过程具有很好的相似性，故多采用柱形孔扩张理论对旁压试验机理进行分析。
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