四川大学学报：工程科学版2011，Vol.43Issue(5)：13-18,6.
高频循环剪切下密砂与结构接触面土体性状的颗粒离散元分析
Behavior of Dense Sand-structure Interface Undergoing the High Frequency Cycle Shearing
摘要
Abstract
The behavior of dense sand-structure interface undergoing the high frequency cycle shear was studied by Particle Discrete Element Method（DEM）.The change of the porosity sand and volumetric strains were examined in detail.The results showed that the dilatation of sand is less obvious with the increase in the particle friction coefficient of dense sand.The larger the dense sand particle stiffness is,the stronger the sand dilatation becomes.The particle stiffness ratio has a little effect on the mechanical properties of sand.In addition,the increase in volume of sand under shearing is not obvious with the increase of the confining pressures.Moreover,the increase in sand shear dilatation under shearing is greater with the increase in the high frequency cycle shear amplitude.The sand shear dilatation is not affected by the shear frequency.关键词
高频循环剪切/颗粒离散元/密砂/接触面/剪胀Key words
high frequency cycle shear/DEM/dense sand/interface/shear dilatation分类
建筑与水利引用本文复制引用
陈福全,韩钧..高频循环剪切下密砂与结构接触面土体性状的颗粒离散元分析[J].四川大学学报：工程科学版,2011,43(5):13-18,6.基金项目
国家自然科学基金资助项目 （）
山东省自然科学基金资助项目 （）
