| 重度增加法与强度折减法的应用对比分析 |
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| 引用本文： | 蔡显杨,许文年,杨学堂,周正军.重度增加法与强度折减法的应用对比分析[J].三峡大学学报(自然科学版),2011,33(2):56-59. |
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| 作者姓名： | 蔡显杨 许文年 杨学堂 周正军 |
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| 作者单位： | 三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌,443002 |
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| 摘 要： | 基于ANSYS有限元软件,通过实例将重度增加法应用到边坡稳定分析中,发现得出的边坡安全系数比运用有限元强度折减法计算所得的结果偏大.然后对影响计算精度的因素包括粘聚力、内摩擦角和坡角进行了敏感性分析,结果表明粘聚力、内摩擦角和坡角对重度增加法计算精度的影响均高于强度折减法,说明强度折减法计算结果较为可靠,而重度增加法的应用具有一定的局限性.
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| 关 键 词： | ANSYS 有限元 重度增加法 强度折减法 |
Comparative Analysis of Application of Gravity Increase Method and Strength Reduction Method |
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| Cai Xianyang,Xu Wennian,Yang Xuetang,Zhou Zhengjun.Comparative Analysis of Application of Gravity Increase Method and Strength Reduction Method[J].Journal of China Three Gorges University(Natural Sciences),2011,33(2):56-59. |
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| Authors: | Cai Xianyang Xu Wennian Yang Xuetang Zhou Zhengjun |
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| Institution: | Cai Xianyang Xu Wennian Yang Xuetang Zhou Zhengjun(Key Laboratory of Geological Hazards in Three Gorges Reservoir Area,Ministry of Education,China Three Gorges Univ.,Yichang 443002,China) |
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| Abstract: | Based on finite element analysis software ANSYS,gravity increase method is used to slope stability analysis of an example;and compared with strength reduction method.The results indicate that the safety factor from the former method is larger.Then the factors affecting computation accuracy,including cohesion,internal friction angle and slope angle,are analyzed.The results show that the accuracy influence by cohesion,internal friction angle and slope angle,with gravity increase method,is higher than that with strength reduction method.So that the results calculated by strength reduction method is more reliable;while gravity increase method has certain limitations. |
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| Keywords: | ANSYS |
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