计算力学学报Issue(2)：228-234,7.DOI:10.7511/jslx201402015
土石混合体直剪离散元数值试验研究
Numerical simulations of direct shear test with soil-rock mixture using discrete element method
摘要
Abstract
Researchers pay more and more attentions on the study of soil-rock mixture (S-RM ) because of the complexity of its engineering geo-mechanical characteristics .T he structural property is one of the im-portant factors on the failure mechanism and the macro mechanical characteristics of S-RM .Using an open-source software developed for numerical simulations using discrete modeling methods -YADE ,a series of direction shear tests are performed to study the effections of the rock block content and the sample scale on the mechanical characteristics of S-RM .From these studies some significant conclusions are draw n :under the same rock block content and grain-size composition ,the macro shear strength and the dilatancy behavior of S-RM will decrease with sample scale's increasing ;and under the same scale , the macro shear strength and the dilatancy behavior of S-RM will increase with increasing rock block content ;the rock blocks have great effects on the meso-stress field ,and effect on the macro mechanical characteristics of the sample .关键词
土石混合体/离散元/直剪试验/细观结构/多尺度试验Key words
soil-rock mixture (S-RM )/discrete element method (DEM )/direct shear test/meso-structure/multi-scale test分类
建筑与水利引用本文复制引用
徐文杰,张海洋,许强,于玉贞..土石混合体直剪离散元数值试验研究[J].计算力学学报,2014,(2):228-234,7.基金项目
国家自然科学基金青年基金（51109117）；清华大学自主科研计划（20111081125）；地质灾害防治与地质环境保护国家重点实验室开放基金（SKLGP2014K019）资助项目． （）
