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本文采用Duncan－Chang模型和新型接触面单元编制了二维有限元程序DSAF，用于圆形地下连续墙开挖过程的分析模拟，算例分析结果与工程实测值较为接近。
In this paper, using the Duncan-Chang model and the new interface element, a two-dimensional finite element program DSAF was developed for the analysis and simulation of the circular underground continuous wall excavation process. The results of numerical examples are close to the actual measured values.