基于概率统计的土石混合体边坡可靠度分析方法
Reliability analysis method for earth-rock aggregate slope based on probability statistics
查看参考文献10篇
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文摘
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为确切描述边坡实际状态,更准确评估边坡稳定性,提出一种基于概率统计的边坡可靠度分析方法.该方法考虑土石混合体边坡平均强度的不确定性和强度在空间上的变异性,综合利用蒙特卡罗方法和连续非连续单元法(CDEM)计算评估边坡可靠程度;将坡体表面的相对位移量作为基本指标,从定性和定量2个方面确定边坡的失稳标准;通过分析一个典型的土石混合体边坡,获得边坡在不同强度分布和强度等级下的可靠度,并结合一个实例对文中方法的有效性进行验证.结果表明:边坡强度的分布特性对边坡的变形失稳结果有较大影响,利用基于概率统计的可靠度分析方法可建立边坡稳定性与岩土材料强度特性的关系. |
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其他语种文摘
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In order to describe the practical state of a slope, and to evaluate the stability of a slope more accurately, a reliability analysis method of earth-rock aggregate slope based on probability statistics was worked out. Dual variability of the slope was considered, including uncertainty of the average strength and spatial variation of the strength of a slope. The reliability of a slope was calculated and evaluated with the Monte Carlo method and CDEM. The failure criteria were proposed in qualitative and quantitative way based on the relative displacement between monitoring points. Through the analysis of a typical earth-rock aggregate slope, the reliability of the slope was obtained. The result shows that deformation and failure of a slope are well dependent on the distributive property of the strength, and the correlation between the strength distribution of the material and the stability of a slope can be found with the reliability analysis method based on probability statistics. |
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来源
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中国安全科学学报
,2018,28(5):141-146 【扩展库】
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DOI
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10.16265/j.cnki.issn1003-3033.2018.05.024
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关键词
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土石混合体边坡
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可靠度
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概率统计
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双重变异性
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连续非连续单元法(CDEM)
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地址
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1.
中国民用航空飞行学院民航安全工程学院, 四川, 广汉, 618307
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中国科学院力学研究所, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1003-3033 |
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学科
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安全科学 |
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文献收藏号
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CSCD:6308392
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参考文献 共
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