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岩石边坡稳定的块体单元极限分析上限法
引用本文:郑惠峰,陈胜宏,吴关叶. 岩石边坡稳定的块体单元极限分析上限法[J]. 岩土力学, 2008, 29(Z1): 323-327
作者姓名:郑惠峰  陈胜宏  吴关叶
作者单位:1. 中国水电顾问集团华东勘测设计研究院,杭州 310014; 2. 武汉大学 水资源与水电工程科学国家重点实验室,武汉 430072
摘    要:将块体单元法与极限分析上限法相结合,提出了岩石边坡稳定的块体单元极限分析上限法。借助于块体单元法离散计算区域,通过块体系统速度场在结构面上满足Mohr-Coulomb屈服条件、关联流动法则、速度边界条件以及块体系统虚功原理,构成求解边坡强度储备安全系数上限解的非线性规划模型,模型的求解采用复合形法。最后研究了一个岩质楔形体边坡算例和小湾水电站进水口边坡实例,通过将块体单元法上限分析计算结果与刚体极限平衡法相比较,验证了该方法的正确性。

关 键 词:边坡稳定  极限分析  上限法  块体单元法  非线性规划  
收稿时间:2008-07-25

Upper bound limit method for stability analysis of rock slopes by block element method
ZHENG Hui-feng,CHEN Sheng-hong,WU Guan-ye. Upper bound limit method for stability analysis of rock slopes by block element method[J]. Rock and Soil Mechanics, 2008, 29(Z1): 323-327
Authors:ZHENG Hui-feng  CHEN Sheng-hong  WU Guan-ye
Affiliation:1. East China Investigation and Design Institution, China Hydropower Engineering Consulting Group Corporation, Hangzhou 310014, China; 2. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
Abstract:A novel upper limit method for rock slope stability analysis is developed.Block element method(BEM) is employed to disperse the computational area and to construct a kinematically admissible velocity field.A nonlinear programming model for the upper limit of safety factor of rock slopes is formulated,in which the velocity field satisfies the constrain conditions including the Mohr-Coulomb yield criterion on the slide surface,the associated flow rule,boundary conditions,as well as the visual work of the bloc...
Keywords:slope stability  limit analysis  upper bound method  block element method  nonlinear programming  
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