土的密度越大，有效平均正应力越低，土的剪胀性就越大。
The larger the density, the lower the effective mean normal stress, the more dilative response is.
正应力在边缘有应力集中，中央应力约为平均正应力的77%。
The normal stress in the center is only 77% of the average value.
如果保持相同的剪应力比，由初始有效平均正应力归一化的有效应力路径不受初始有效平均正应力的影响。
The results indicate that the stress path is not affected by changing the initial effective mean stress if the shear stress ratio remains the same.
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