摘要
粗、细颗粒的相对含量是影响砾石土抗剪强度大小的最主要因素之一。本文通过设计改进的直剪试验,试验研究了不同粗颗粒含量砾石土剪切过程中的强度-变形特征。研究结果表明:粗颗粒含量的多少对砾石土土体抗剪强度有重要影响,粗颗粒含量在70%附近时,砾石土土体的内摩擦角最大,抗剪强度最大。
The relative content of coarse and fine particles is one of the most important factors affecting the shear strength of gravel soil.In this paper,the shear strength-deformation characteristics of gravel soils with different coarse-grained contents are studied by improved direct shear tests.The results show that the content of coarse particles has an important influence on the shear strength of gravel soil.When the content of coarse particles is around70%,the internal friction angle of gravel soil is the largest and the shear strength is the largest.
作者
郝腾飞
喻邦江
HAO Teng-fei;YU Bang-jiang(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection（Chengdu University of Technology）,Chengdu 610059,China;Guizhou Transportation Plannig Survey ＆ Design Academy Co.,LTD.Guizhou,Guiyang 550001,China)
出处
《地质灾害与环境保护》
2018年第3期73-76,共4页
Journal of Geological Hazards and Environment Preservation
基金
四川省教育厅科研计划重点项目(18ZA0045)
贵州省交通厅科技项目资助(编号:2015-121-025)
关键词
砾石土
直剪试验
粗颗粒含量
抗剪强度
gravel soil
direct shear test
coarse particle content
the shear strength
