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。
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.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第z2期235-238,共4页
Rock and Soil Mechanics
基金
清华大学"九八五"资助项目(JC2002007)。
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
slope stability
reliability analysis
stochastic finite element method
3-D numerical simulation
monte carlo simulation
