土木工程与管理学报2012，Vol.29Issue(4)：45-49,54,6.
土工格栅加筋拉拔试验界面特性细观分析
Microscopic Analysis of Interface Characteristic of Geogrid and Soil Through Pull-out Test
摘要
Abstract
The interface characteristics between geo - grid and soil have a significant influence on the performance of reinforcement and are very important in design. Based on the Discrete Element Method software PFC , the parameters of soil and geo-grid are obtained by the biaxial test and geo-grid tensile test. The microscopic properties of the interface are investigated through the pull-out tests in different cases. The results show that the horizontal displacement above the geo-grid is larger than that below the geo-grid. The widths of shear band both above and below the geo-grid are different, and the widths above the geo-grid are greater than that below the geo-grid. The effects of interlock between the geo-grid and particles with various shapes are different. As the interlock effects increase, the horizontal displacement reduces and the width of shear band increases.关键词
离散元法/土工格栅/拉拔试验/界面特性Key words
discrete element method/geogrid/pull-out test/interface characteristic分类
建筑与水利引用本文复制引用
赖汉江,郑俊杰,甘甜,董友扣..土工格栅加筋拉拔试验界面特性细观分析[J].土木工程与管理学报,2012,29(4):45-49,54,6.基金项目
国家自然科学基金(50908112) （50908112）
教育部留学回国人员科研启动基金(20091341) （20091341）
山西省交通建设科技项目(11-2-17) （11-2-17）
