| 降雨条件下二维边坡稳定可靠性分析 |
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| 引用本文： | 黄景华,陈朝晖,秦文涛.降雨条件下二维边坡稳定可靠性分析[J].福州大学学报(自然科学版),2017,45(4):501-507. |
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| 作者姓名： | 黄景华 陈朝晖 秦文涛 |
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| 作者单位： | 重庆大学土木工程学院,山地城镇建设与新技术教育部重点实验室重庆大学;重庆大学土木工程学院,山地城镇建设与新技术教育部重点实验室重庆大学;重庆交通职业学院 |
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| 基金项目： | 国家重大科技专项“水体污染控制与治理科技重大专项” 资助项目(2008ZX07315-001-1) |
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| 摘 要： | 大多数滑坡都发生在降雨期间或降雨之后.基于有限元方法与传统的极限平衡法相结合的滑面应力法进行二维边坡稳定性分析,研究了降雨强度、持时和雨型对边坡稳定性的影响.并以可靠性理论为基础,研究了土体抗剪强度不确定性对降雨条件下边坡稳定性的影响.分析结果与重庆地区的降雨滑坡的案例统计分析规律一致.
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| 关 键 词： | 滑面应力法 降雨 边坡稳定性 安全系数 可靠度 |
| 收稿时间： | 2017/2/23 0:00:00 |
| 修稿时间： | 2017/4/1 0:00:00 |
Reliability analysis of two-dimensional slope stability under rainfall conditions |
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| HUANG Jinghu,CHEN Zhaohui and QIN Wentao.Reliability analysis of two-dimensional slope stability under rainfall conditions[J].Journal of Fuzhou University(Natural Science Edition),2017,45(4):501-507. |
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| Authors: | HUANG Jinghu CHEN Zhaohui and QIN Wentao |
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| Institution: | School of Civil Engineering,Chongqing University,Key Lab of New Technol for Construction of Cities in Mountain Area Chongqing Univ,Ministry of Education;School of Civil Engineering,Chongqing University,Key Lab of New Technol for Construction of Cities in Mountain Area Chongqing Univ,Ministry of Education;Chongqing Vocational College of Transportation |
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| Abstract: | Most of the landslides have been observed occurring during or after rainfall. In this paper, the slip-surface stress method, a combination of FEM and traditional limit equilibrium method, is applied for the 2-D slope stability analysis. The effects of the rainfall intensity, holding time and rain types are analyzed, and the reliability based slope stability is studied considering the uncertainty of soil shear strength for slope stability under rainfall. The analyzing results are consistent with the characteristics of statistic results of the rainfall-caused landslide cases in Chongqing area. |
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| Keywords: | slip-surface stress method rainfall slope stability safety index reliability |
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