| 局部安全系数法中约束对土坡稳定分析的影响 |
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| 引用本文： | 李亮,迟世春,林皋,褚雪松.局部安全系数法中约束对土坡稳定分析的影响[J].哈尔滨工业大学学报,2009,41(6):155-159. |
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| 作者姓名： | 李亮 迟世春 林皋 褚雪松 |
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| 作者单位： | 李亮,褚雪松,LI Liang,CHU Xue-song(青岛理工大学,土木工程学院,山东,青岛,266033);迟世春,林皋,CHI Shi-chun,LIN Gao(大连理工大学,土木水利学院,辽宁,大连,116023) |
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| 基金项目： | 国家自然科学基金重点项目 |
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| 摘 要： | 为研究局部安全系数法中不同约束条件对土坡稳定分析的影响,结合两典型土坡,对局部安全系数法这一双重优化问题中的约束条件进行了分析,约束条件主要包括极大化问题中条块间法向力、剪切力、条底法向力需满足的约束以及极小化问题中可行滑动面需满足的约束条件,研究结果表明,限制条块间法向力为正,而允许条间剪切力为负条件下,局部安全系数法所得结果较为合理.
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| 关 键 词： | 边坡稳定 局部安全系数 极值原理 双重优化 约束条件 |
Effect of constraints on slope stability analysis in local factor of safety method |
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| LI Liang,CHI Shi-chun,LIN Gao,CHU Xue-song.Effect of constraints on slope stability analysis in local factor of safety method[J].Journal of Harbin Institute of Technology,2009,41(6):155-159. |
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| Authors: | LI Liang CHI Shi-chun LIN Gao CHU Xue-song |
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| Affiliation: | 1(1.School of Civil Engineering,Qingdao Technological University,Qingdao 266033,China;2. School of Civil and Hydraulic Engineering,DaLian University of Technology,Dalian 116023,China) |
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| Abstract: | The stability analysis on two typical slopes was performed by local factor of safety method in order to study the effect of constraints in the dual optimization problem on the obtained results. The constraints consist of the limits to the boundary interslice normal,shear forces,and normal forces acting on the slice base in the maximization problem as well as the limits to the potential slip surfaces in the minimization problem. The analysis indicates that rational results of local factor of safety method can be obtained when the interslice normal force is positive and the interslice shear force is negative. |
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| Keywords: | slope stability analysis local factor of safety extremum principle dual optimization constraints |
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