| 基于随机二元指标的边坡稳定性分析 |
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| 引用本文： | 刘小强,周世良,尚明芳,李怡.基于随机二元指标的边坡稳定性分析[J].西北地震学报,2011,33(Z1). |
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| 作者姓名： | 刘小强 周世良 尚明芳 李怡 |
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| 作者单位： | 重庆交通大学河海学院,重庆,400074 |
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| 基金项目： | 教育部科学技术研究重点项目(210176); 云南省交通运输厅科技项目(702237) |
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| 摘 要： | 考虑岩土体抗剪强度参数的变异性,综合极限平衡法和可靠性理论构建了安全系数概率密度分布函数模型。结合实际工程特点,以安全系数大于临界值为标准构建有效区,将有效区安全系数均值与对应可靠度相乘,得到以安全系数和可靠度为随机二元指标的有效安全系数。以有效安全系数为定量指标,将边坡宏观特征现象与定量分析相联系,构建意义更为明确的边坡稳定性分析及评价方法。通过工程实例对比了有效安全系数与传统评价指标之间的差异。所得结论可为工程建设提供参考和借鉴。
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| 关 键 词： | 边坡 随机二元指标 稳定性 有效区 安全系数 可靠度 |
Stability Analysis of Slopes Based on Random Dual Index |
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| LIU Xiao-qiang,ZHOU Shi-liang,SHANG Ming-fang,LI Yi.Stability Analysis of Slopes Based on Random Dual Index[J].Northwestern Seismological Journal,2011,33(Z1). |
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| Authors: | LIU Xiao-qiang ZHOU Shi-liang SHANG Ming-fang LI Yi |
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| Institution: | LIU Xiao-qiang,ZHOU Shi-liang,SHANG Ming-fang,LI Yi(College of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Considering the variability of geotechnical shear strength parameters,combining with the limit equilibrium method and the reliability theory,the safety factor probability density distribution function model is constructed.An effective region is built after taking the safety factors which are greater than the critical safety factor as criterion,and then the average value of safety factors in the effective region multiplied by corresponding reliability,the effective safety factor based on the random dual inde... |
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| Keywords: | Slopes Random dual index Stability Effective region Safety factor Reliability |
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