岩土工程学报Issue(5)：873-879,7.DOI:10.11779/CJGE201405009
节理的剪切力学性质与含三维形貌参数的剪切强度准则比较研究
Shear behavior of rock joints and comparative study on shear strength criteria with three-dimensional morphology parameters
摘要
Abstract
Three groups of rock joints with different morphologies are made from cement mortar materials. The shear behavior is investigated by means of the direct shear tests under constant normal stress condition. The effects of the applied normal stress and morphology on the shear strength are analyzed. According to the experimental results, it can be found that the peak dilatancy angle decreases with the increasing normal stress and increases with the increasing roughness. The shear strength increases with the increasing normal stress and also the roughness of rock joints. The reason of underestimation by JRC-JCS criterion is analyzed, and it is suggested to adopt the three-dimensional morphology parameters and tensile strength to capture the characteristics of the peak shear strength. The hyperbolic criterion is suggested to use as a predictive tool to assess the peak shear strength of rock joints under low normal stress level based on the comparisons among several criteria with three-dimensional morphology parameters.关键词
节理/三维形貌参数/抗拉强度/抗剪强度准则Key words
rock joint/three-dimensional morphology parameter/tensile strength/shear strength criteria分类
建筑与水利引用本文复制引用
唐志成,刘泉声,刘小燕..节理的剪切力学性质与含三维形貌参数的剪切强度准则比较研究[J].岩土工程学报,2014,(5):873-879,7.基金项目
国家自然科学重点基金项目（41130742）；国家重点基础研究发展计划（973计划）项目（2014CB046904）；国家自然科学基金项目（40972178）；湖北省自然科学基金创新群体项目（2011CDA119）；中国博士后科学基金项目 （）
