| 岩石边坡稳定的块体单元极限分析上限法 |
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| 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 |
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| 作者姓名： | 郑惠峰 陈胜宏 吴关叶 |
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| 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 |
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| 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。
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| 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 |
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| 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 |
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| Authors: | ZHENG Hui-feng CHEN Sheng-hong WU Guan-ye |
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| 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 |
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| 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... |
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| Keywords: | slope stability limit analysis upper bound method block element method nonlinear programming |
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