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针对规则的椭圆形颗粒、圆形和履带形颗粒以及不规则形状颗粒组成的土体进行了平面力学分析,推导了应力比和塑性应变增量比表达式,建立了由土体本身内在材料属性,包括颗粒的形状、大小或级配、以及布局方式或组构,所决定的细观剪胀模型。分析结果表明,在建立状态相关的宏观剪胀理论时,状态的概念并不仅仅局限于描述土体颗粒布局方式的孔隙比状态参数,还应包括其它能够反映颗粒形状、大小或级配的宏观状态参数。
The mechanical analysis of the soil composed of regular elliptical, circular and tracked particles and irregularly shaped particles was carried out. The expressions of stress ratio and plastic strain increment ratio were deduced, and the relationship between the intrinsic material properties , Including the shape, size, or grading of the particles, and the meso-dilatometric model that is determined by the layout or organization. The results show that the concept of state is not only limited to the parameter of porosity ratio describing soil particle distribution, but also includes other macroscopic values that can reflect the shape, size and gradation of particles Status parameters.