| 基于M-C等面积圆屈服准则的岩土混合边坡稳定分析 |
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| 引用本文： | 何根,游春华,夏宇,陈婉若.基于M-C等面积圆屈服准则的岩土混合边坡稳定分析[J].南华大学学报(自然科学版),2018,32(5):50-54. |
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| 作者姓名： | 何根 游春华 夏宇 陈婉若 |
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| 作者单位： | 湖南工学院 建筑工程与艺术设计学院,湖南 衡阳 421002,湖南工学院 建筑工程与艺术设计学院,湖南 衡阳 421002,湖南工学院 建筑工程与艺术设计学院,湖南 衡阳 421002,湖南工学院 建筑工程与艺术设计学院,湖南 衡阳 421002;广州大学 土木工程学院,广东 广州 510006 |
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| 基金项目： | 湖南省教育厅一般项目(15C0364;15C0367);湖南工学院科研项目(HY15015);湖南工学院博士科研启动项目(HQ14009) |
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| 摘 要： | 针对有限元软件基于外角外接圆D-P准则计算边坡稳定安全系数偏大的问题,采用M-C等面积圆屈服准则进行改进,推导了二者计算安全系数的关系.基于M-C等面积圆屈服准则计算岩土混合边坡,计算前对输入的土质和岩质的黏聚力及内摩擦角进行转换,结果表明,计算安全系数与Morgenstern-Price法得到的结果较为接近,并且塑性区与滑动面形状近似,表明了M-C等面积圆屈服准则在分析岩土混合边坡稳定问题是可行的.分析发现,岩土混合边坡安全系数随土质黏聚力和内摩擦角正切值的减少而减少,并且塑性区形状保持不变.
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| 关 键 词： | D-P准则 强度折减法 岩土混合边坡 安全系数 |
| 收稿时间： | 2018/3/27 0:00:00 |
The Stability Analysis of Rock-soil Slope Based on the Mohr-Coulomb Equivalent Area Circle Yield Criterion |
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| HE Gen,YOU Chunhu,XIA Yu and CHEN Wanruo.The Stability Analysis of Rock-soil Slope Based on the Mohr-Coulomb Equivalent Area Circle Yield Criterion[J].Journal of Nanhua University:Science and Technology,2018,32(5):50-54. |
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| Authors: | HE Gen YOU Chunhu XIA Yu and CHEN Wanruo |
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| Institution: | School of Architectural Engineering and Artistic Design,Hunan Institute of Technology, Hengyang,Hunan 421002,China,School of Architectural Engineering and Artistic Design,Hunan Institute of Technology, Hengyang,Hunan 421002,China,School of Architectural Engineering and Artistic Design,Hunan Institute of Technology, Hengyang,Hunan 421002,China and School of Architectural Engineering and Artistic Design,Hunan Institute of Technology, Hengyang,Hunan 421002,China;School of Civil Engineering,Guangzhou University, Guangzhou,Guangdong 510006,China |
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| Abstract: | In view of the larger safety factor when calculating the slope stability in the finite element software with circumscribed Drucker-Prager criterion,it can be improved by Mohr-Coulomb equivalent area circle yield criterion,the relationship of safety factors obtained by two yield criteria is reduced.Based on the equal area circle yield criterion,the cohesion and internal friction angle of soil and rock were switched before calculating for rock-soil slope.The results show that safety factors are close to that calculated by Morgenstern-Price method,considering the similarity between the plastic zone and sliding surface,the feasibility in the stability analysis of rock-soil slope based on Mohr-Coulomb equivalent area circle yield criterion is proved.The analysis show that the safety factor of rock-soil slope reduces when cohesion and tangent value of internal friction angle of soil reduces,while the shape of plastic zone would remain unchanged. |
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| Keywords: | Drucker-Prager yield criterion strength reduction method rock-soil slope safety factor |
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