| 土石坝坡三维随机有限元整体可靠度分析 |
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| 引用本文： | 谢立全,于玉贞,张丙印.土石坝坡三维随机有限元整体可靠度分析[J].岩土力学,2004,25(Z2):235-238. |
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| 作者姓名： | 谢立全 于玉贞 张丙印 |
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| 作者单位： | 清华大学水利系,北京,100084 |
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| 基金项目： | 清华大学"九八五"资助项目(JC2002007). |
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| 摘 要： | 考虑边坡工程中土的物理力学参数在三维空间上分布的随机变异特性,建立了抗剪强度折减法和蒙特卡罗法相结合的随机有限元法,用以计算边坡的整体稳定可靠度.以某心墙土石坝为例,对土料的容重、凝聚力和内摩擦角的三维空间随机场进行了模拟,计算了整体稳定可靠度.计算结果表明,该方法用于边坡整体稳定可靠度分析是切实可行的.
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| 关 键 词： | 边坡稳定 可靠度分析 随机有限元 三维数值模拟 蒙特卡罗法 |
| 文章编号： | 1000-7598-(2004)增-0235-04 |
| 修稿时间： | 2004年4月30日 |
Global reliability assessment of earth-rock dam based on three-dimensional stochastic FEM |
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| XIE Li-quan,YU Yu-zhen,ZHANG Bing-yin.Global reliability assessment of earth-rock dam based on three-dimensional stochastic FEM[J].Rock and Soil Mechanics,2004,25(Z2):235-238. |
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| Authors: | XIE Li-quan YU Yu-zhen ZHANG Bing-yin |
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| Abstract: | A three-dimensional stochastic finite element method incorporating the shear strength reduction concept (SSR) and Monte Carlo simulation into FEM (SSR SFEM) is developed in this paper. The global reliability of a simple core earth-rock dam is analyzed to illustrate the performance of the proposed SSR SFEM. In the computation, the unit weight, angle of internal friction and cohesion are assumed to be stochastic and five cases with different averages and variances are considered. |
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| Keywords: | slope stability reliability analysis stochastic finite element method 3-D numerical simulation monte carlo simulation |
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