这份报纸瞄准为不饱和的钟摆运动状态的小粒的土壤建立各向异性的压力表情。用秒顺序织物张肌,我们与统计上平均方法提出土壤的一个 micromechanics 计划,并且表明宏观的一般水准不饱和的小粒的土壤强调在钟摆运动状态不是各向同性的。压力不仅从由于织物各向异性的接触力量,而且毛状的压力是方向性的依赖者,它与毛状的压力是各向同性的普通的点不同。不饱和的钟摆运动状态的小粒的土壤的毛状的压力被接触正常的取向分发决定,因此它是仔细与土壤的起始、导致的 anisotropy 有关。最后,在浸透的不同的度的钟摆运动状态的土壤的 triaxial 压缩测试的 DEM 数字模拟被用来验证压力的上面的 anisotropy 的存在。
This paper aims at establishing an anisotropic stress expression for unsaturated pendular-state granular soils. Using the second-order fabric tensor, we formulate a micromechanics scheme of soils with statistically averaging method, and reveal that the macroscopic average stress of unsaturated granular soils in pendular-state is not isotropic. Not only is the stress from contact forces anisotropic due to the fabric, but also the capillary stress is directional dependent, which is different from the common point that the capillary stress is isotropic. The capillary stress of unsaturated pendular-state granular soils is determined by the orientation distribution of con- tact normals, so it is closely related to the initial and induced anisotropy of soils. Finally, DEM numerical simulations of triaxial compression tests of pendular-state soils at different degrees of saturation are used to verify the existence of above anisotropy of stresses.