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| 基于有限元折减法的边坡渗流及稳定分析 | |
| 引用本文： | 芮红华,李凯,娄一青.基于有限元折减法的边坡渗流及稳定分析[J].三峡大学学报(自然科学版),2009,31(3):15-17,21. |
| 作者姓名： | 芮红华 李凯 娄一青 |
| 作者单位： | 1. 郎溪县审计局,安徽,郎溪,232001 2. 河海大学土木工程学院,南京,210098 3. 河海大学水利水电工程学院,南京,210098 |
| 基金项目： | 国家自然科学基金资助项目，温州市水利管理处科技项目 |
| 摘 要： | 渗流作用影响边坡的稳定性．运用商业有限元软件的自带模块，根据节点的水头值和高程的比较模拟自由面和渗透场，计算单元的渗透力，以渗透力代替周边孔隙水压力施加于坡体单元上，然后采用强度折减法进行渗流作用下的边坡稳定分析．算例表明，该方法分析边坡的渗流及稳定是可行的，得到的结果较有效．渗流作用下，边坡的安全系数降低，坡脚的等水头线分布比较密集，渗透力比较集中，发生渗透破坏的可能性比其他地方大． |
| 关 键 词： | 渗流 边坡稳定 有限元强度折减法 安全系数 |
Slope Seepage and Stability Analysis Based on Strength Reduction Finite Element Method |
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| Rui Honghua,Li Kai,Lou Yiqing.Slope Seepage and Stability Analysis Based on Strength Reduction Finite Element Method[J].Journal of China Three Gorges University(Natural Sciences),2009,31(3):15-17,21. | |
| Authors: | Rui Honghua Li Kai Lou Yiqing |
| Institution: | Rui Honghua Li Kai Lou Yiqing(1. Langxi Audit Bureau, Langxi 232001, China;2. College of Civil Engineering, Hohai Univ. ; Nanjing 210098, China;3. College of Water Conservancy ＆ Hydropower Engineering, Hohai Univ., Nanjing 210098, China) |
| Abstract: | Slope stability is affected by seepage. By using commercial finite element software own module, the free-surface and seepage field has been simulated by comparison of the water head and elevation. The seepage force,instead of the pore-pressure around soil element is imposed at each node of the seepage field. Fi- nally, the stability of soil slope under seepage is studied with the strength reduction finite element method. An example is given to show the reliability of it. The seepage forces have concentrated at the foot of the slope where is prone to damage; and the safety factor has reduced under seepage. |
| Keywords: | seepage slope stability strength reduction finite element method safety factor |
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