| 边坡三维端部效应分析 |
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| 引用本文： | 刘华丽,朱大勇,钱七虎,李宏伟. 边坡三维端部效应分析[J]. 岩土力学, 2011, 32(6): 1905-1909 |
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| 作者姓名： | 刘华丽 朱大勇 钱七虎 李宏伟 |
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| 作者单位： | 1. 解放军理工大学 工程兵工程学院，南京 210007；2. 合肥工业大学 土木与水利工程学院，合肥 230009 |
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| 摘 要： | 利用基于滑面正应力修正的三维安全系数解法，研究三维滑体端部作用对安全系数的影响。假设滑体中部为圆柱体，端部为椭球面，计算了一系列不同几何参数组合的滑体三维安全系数。结果表明，当滑体宽度L与高度H的比值(L/H)逐渐增大时，三维安全系数F3与主滑面二维安全系数F2的比值(F3/F2)逐渐减小，当L/H=2时，F3/F2最大为1.3；当L/H=5时，F3/F2最大为1.1，当L/H > 10时，F3/F2 < 1.05，此时可忽略端部效应。分析还发现，当土体摩擦角愈大，F3/F2将有所减小，即三维端部效应将有所减弱。
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| 关 键 词： | 端部分析 三维 滑坡 稳定性 |
| 收稿时间： | 2010-08-02 |
Analysis of three-dimensional end effects of slopes |
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| LIU Hua-li,ZHU Da-yong,QIAN Qi-hu,LI Hong-wei. Analysis of three-dimensional end effects of slopes[J]. Rock and Soil Mechanics, 2011, 32(6): 1905-1909 |
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| Authors: | LIU Hua-li ZHU Da-yong QIAN Qi-hu LI Hong-wei |
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| Affiliation: | 1. Engineering Institute of Engineer Corps, PLA University of Science and Technology, Nanjing 210007, China; 2. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | By using the explicit solution of three-dimensional landslide stability based on modification of normal stress distribution over the slip surface,the influence of the three-dimensional end effects on the factor of safety is investigated.The three-dimensional geometry of the slip surface is assumed to consist of a cylinder and elliptical ends.The values of three-dimensional factor of safety are computed with a series of combination of geometrical parameters.The computation results show that the ratio of the ... |
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| Keywords: | end analysis three-dimension landslide stability |
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