| 基于强度折减的离散单元法在岩质边坡稳定性分析中的应用 |
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| 引用本文： | 周先齐,徐卫亚,钮新强,郑文棠.基于强度折减的离散单元法在岩质边坡稳定性分析中的应用[J].长江科学院院报,2008,25(5). |
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| 作者姓名： | 周先齐 徐卫亚 钮新强 郑文棠 |
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| 作者单位： | 河海大学,土木工程学院,南京,210098;长江勘测规划设计研究院,武汉,430010;河海大学,土木工程学院,南京,210098;长江勘测规划设计研究院,武汉,430010 |
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| 摘 要： | 离散元方法是一种用于非连续介质的数值计算方法,适用于岩体断层、节理、裂隙比较发育的岩质高边坡稳定性分析.强度折减法是一种在边坡稳定性分析中应用比较广泛的数值方法,其所认定的强度储备系数跟极限平衡所提出的稳定安全系数是等效的.将离散元方法与强度折减准则相结合,采用两套离散网格:密网格代表节理裂隙发育的工况;稀网格近似等效为岩体经过加固后完整性得到提高的工况,对构皮滩水垫塘高边坡进行了计算,分析了自然边坡及开挖边坡的稳定性,并对支护效果进行了评价,为工程的设计施工提供了参考.
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| 关 键 词： | 离散元法 强度折减 非连续介质 安全系数 位移矢量差 |
Application of DDA Based on Strength Reduction in Rock Slope Stable Analysis |
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| ZHOU Xian-qi,XU Wei-ya,NIU Xin-qiang,ZHENG Wen-tang.Application of DDA Based on Strength Reduction in Rock Slope Stable Analysis[J].Journal of Yangtze River Scientific Research Institute,2008,25(5). |
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| Authors: | ZHOU Xian-qi XU Wei-ya NIU Xin-qiang ZHENG Wen-tang |
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| Affiliation: | ZHOU Xian-qi1,2 XU Wei-ya1,NIU Xin-qiang2,ZHENG Wen-tang1(1.Hohai University,Nanjing 210098,China,2.Changjing Institute of Survey,Planning,Design , Research,Changjiang Water Resources Commission,Wuhan 430010,China) |
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| Abstract: | The discrete element method is a numerical method used in non-continuum.It is suitable for high rock slope contained much more rock faults,joints and cracks to do analysis of stability.The strength reduction method is a numerical method,which is applied in slope analysis of stability extensively.Strength reserve coefficient assessed by strength reduction method is equal to stability safety factor proposed by limit equilibrium method.The discrete element method and strength reduction criterion are combined.T... |
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| Keywords: | discrete element method strength reduction non-continuum stability safety factor displacement vector difference |
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