| 重力坝坝基多斜面抗滑稳定模糊体系可靠度研究 |
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| 引用本文： | 钱龙,王刚,李梦瑶,李向鹏.重力坝坝基多斜面抗滑稳定模糊体系可靠度研究[J].水利与建筑工程学报,2020(2):117-122. |
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| 作者姓名： | 钱龙 王刚 李梦瑶 李向鹏 |
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| 作者单位： | 大连理工大学水利工程学院 |
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| 基金项目： | “十三五”国家重点研发计划项目课题“大坝突发事件应急监测与隐患快速探测新技术”(2016YFC0401600);国家自然科学基金项目“基于突变和模糊理论的重力坝坝基失稳概率计算方法研究”(51309048)。 |
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| 摘 要： | 以基岩具有多斜面、多滑移通道的某实际重力坝工程为例,基于刚体极限平衡法,采用模糊理论和几种典型的体系可靠度计算方法,研究其典型坝段的坝基深层抗滑稳定模糊体系可靠度,探讨模糊理论中隶属函数形式、隶属度以及隶属函数中关键参数的取值对可靠度计算结果的影响。研究结果表明,采取限制失效概率模糊界限比的方法可使计算结果更具有参考性,考虑模糊性的抗滑稳定可靠指标的下限较常规可靠度计算值偏小,这在重力坝坝基抗滑稳定分析中应引起重视。
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| 关 键 词： | 重力坝 深层抗滑稳定 体系可靠度 模糊数学 |
Fuzzy System Reliability Analysis of Anti-sliding Stability of Multi-slide Surface in Deep Bedrock |
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| QIAN Long,WANG Gang,LI Mengyao,LI Xiangpeng.Fuzzy System Reliability Analysis of Anti-sliding Stability of Multi-slide Surface in Deep Bedrock[J].Journal of Water Resources Architectural Engineering,2020(2):117-122. |
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| Authors: | QIAN Long WANG Gang LI Mengyao LI Xiangpeng |
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| Affiliation: | (School of Hydraulic Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China) |
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| Abstract: | Taking an actual gravity dam with multiple slopes and multiple slip channels as an example, based on the rigid body limit equilibrium method, fuzzy theory and several typical system reliability calculation methods are used to analyze the deep anti-sliding of the dam foundation of its typical dam section. Stability of fuzzy system reliability is discussed. The influence of the form of membership function, membership degree and the values of key parameters in membership function on the reliability calculation results are discussed. The research results show that the method of limiting the fuzzy limit ratio of the failure probability can make the calculation results more reference. The lower limit of the reliability index of anti-sliding stability considering the ambiguity is smaller than the conventional reliability calculation value, which should be taken seriously. |
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| Keywords: | gravity dam deep anti-sliding stability system reliability fuzzy mathematics |
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