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针对目前散粒体液化细观机制研究的局限性,对C.K.C型动态三轴仪进行改进,研制了可用于研究散粒体细观组构特征的动三轴可视化试验系统。利用该系统对循环荷载作用下标准砂的颗粒运动规律及细观组构特征进行初步探讨,从颗粒的运动规律、定向性、配位数和孔隙率等细观角度分析了循环荷载作用下饱和砂土发生液化的细观机制,认为液化的发生是土体在循环荷载作用下颗粒不断运动、重新排列的结果,指出颗粒长轴方向、配位数和孔隙率等细观组构参量是反映循环荷载作用下饱和砂土液化宏观响应的重要参量。
Aiming at the limitations of current meso-mechanism mechanism of bulk liquid, the C.K.C dynamic triaxial apparatus is improved and a dynamic three-axis visualization test system that can be used to study the mesostructural features of the granular body is developed. By using the system, the particle movement law and the meso-structure feature of standard sand under cyclic loading were preliminarily discussed. From the perspectives of particle motion, orientation, coordination number and porosity, the effect of saturation under cyclic loading The meso-mechanism of liquefaction occurred in sandy soil. It is considered that the liquefaction is the result of the continuous movement and rearrangement of the particles under cyclic loading. It is pointed out that the mesostructural parameters such as the direction of the long axis of the particles, the coordination number and the porosity are reflected The Important Parameters of Macroscopic Response of Saturated Sand Liquefaction Under Cyclic Loading.