岩土力学Issue(2)：551-555,5.
确定岩石节理Maksimovic峰值抗剪强度准则中“粗糙度角”的新方法
A new method for calculating roughness anglein Maksimovic peak shear strength criterion of rock joints
摘要
Abstract
A nonlinear peak shear strength criterion, proposed by Maksimovic, uses a simple hyperbolic function to describe the peak dilatancy angle under different normal stresses. The model has significant advantages, such as parameters have physical meaning, law is valid from zero to infinity, and it is simpler from the view of mathematical point. The roughness of joint surface is expressed by the parameter of“roughness angle, ”, obtained by using the least square fit method on basis of at least three sets of measured data. It is not easy to use the Maksimovic criterion to predict the peak shear strength of rock joints. In this paper, the roughness angle is determined by a rational method with a quantitative three dimensional morphology parameters of joint surface. Then, a modified Maksimovic peak shear strength criterion is proposed. Several experimental results are used for verification of the proposed relations. It is shown that the calculated values are in good agreement with the measured data. It also presents the comparison between the new criterion with the famous Barton’s criterion. We can use the proposed criterion as a useful tool to predict the peak shear strength for rock joints.关键词
岩石节理/峰值抗剪强度/粗糙度/三维形貌参数/粗糙度角Key words
rock joints/peak shear strength/roughness/three-dimensional morphology parameters/roughness angle分类
建筑与水利引用本文复制引用
唐志成,刘泉声,夏才初,吴月秀,黄继辉,王春波..确定岩石节理Maksimovic峰值抗剪强度准则中“粗糙度角”的新方法[J].岩土力学,2014,(2):551-555,5.基金项目
国家自然科学基金重点资助项目（No.41130742）；国家重点基础研究发展计划(973项目)（No.2014CB046904）；湖北省自然科学基金重点项目（创新群体）（No.2011CDA119）；国家自然科学基金资助项目（No.40972178）。 （973项目）
