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从细观尺度上分析了砂土类介质两种典型理想单元体内部结构变化对其力学响应的影响；结果表明即使颗粒性质相同，其结构形式（Ｐａｃｋｉｎｇ）不同亦有不同的力学响应．这为砂土扰动效应提供了一种以定量分析为基础的新解释．
From the meso-scale, the influence of the internal structure changes of two typical ideal elements on the mechanical response of the sand-like medium is analyzed. The results show that the mechanical properties of the sand-like medium are different even if the particles have the same properties. This provides a new explanation based on quantitative analysis for the effect of sand disturbance.