人民长江2018，Vol.49Issue(10)：97-103,7.DOI:10.16232/j.cnki.1001-4179.2018.10.019
不同粒径对粗粒土力学参数影响的研究
Influence of particle size on mechanical parameters of coarse grain soil
摘要
Abstract
As a good filling material,the coarse grain soil is widely used in high-filling engineering. However,the influential factors for mechanical parameters of coarse grain soil are complicate due to the wide range of particle? size,so different research-ers draw various conclusions. Four group samples of different sizes and particles were adopted to carry out triaxial test simulations with a discrete element software, and the particle size of each group was the same. The simulation results verified the general conclusions of indoor triaxial tests,and explained the experiment phenomenon of dilatancy and the shear shrinkage from? a? mi-cro? perspective. We research the influence of different particle size on the macroscopic mechanics parameters of coarse grain soil and propose that the microscopic parameters in a discrete element simulation are positively related to the particle size, and this conclusion is verified through indoor triaxial compression tests.关键词
粗颗粒土/均匀颗粒/离散元/细观参数/三轴试验Key words
coarse grain particle/single-size particles/DEM/microscopic parameter/triaxial test分类
通用工业技术引用本文复制引用
孙晨,韩文喜,王昊..不同粒径对粗粒土力学参数影响的研究[J].人民长江,2018,49(10):97-103,7.基金项目
国家重点基础研究发展"973"计划项目"机场高填方长期变形规律及优化设计方法研究"(2014CB047003) （2014CB047003）
