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对姜朴同志的讨论,逐点答复如下: 一、用三轴不排水压缩试验所测得的E_0值,系采自(σ_1-σ_3)和垂直应变的关系曲线。直轴既用(σ_1-σ_3)表示,就没有评论者所谓“有效应力”或“总应力”的分别。同时,原文式(10)a中的(σ_z-u_0)和(σ_x-u_0)既代表有效应力,实际上也是偏应力,故与E_0的求得完全相适应的。二、一般来说,不论t=0或t>0,土体的变形的确都包括形状变形和体积变形。但对地基言,土大致属饱和或接近于饱和,所以t=0时仅有形状变形,在t>0时主要是体积变形,形状变形是比较小的。原文式(10)a的S_0即代表t=0时
For Comrade Jiang Pu’s discussion, point-by-point answers are as follows: 1. The E 0 value measured with the triaxial undrained compression test is taken from the relationship between (σ 1 -σ 3) and vertical strain. The straight axis is expressed by (σ_1-σ_3), and there is no difference between the so-called “effective stress” or “total stress” of the reviewer. At the same time, (σ_z-u_0) and (σ_x-u_0) in the original formula (10)a represent both effective stress and de facto deviatoric stress, and thus are completely compatible with the evaluation of E_0. Second, in general, regardless of t = 0 or t> 0, the soil deformation does indeed include shape deformation and volume deformation. However, for ground words, the soil is roughly saturated or nearly saturated, so only the shape deformation occurs at t=0, and the volume deformation is mainly at t>0, and the shape deformation is relatively small. S_0 of the original formula (10)a represents t=0