摘要
采用自适应有限元法分析边坡的应力场,然后应用并行组合模拟退火算法建立基于应力场的边坡任意形状临界滑动面的全局搜索方法。该方法适用于任意几何形状,不同岩土材料分层以及多种荷载作用的复杂边坡。并行组合模拟退火算法是将模拟退火算法和遗传算法相结合的优化算法,它可以从多个初始点开始并行寻优,能以较快的速度找到全局最优解。通过工程实例分析,证明这种基于自适应有限元分析和并行组合模拟退火算法搜索边坡临界滑动面的方法可行、高效。
The adaptive finite element method is used to analyze the stress fields in slopes. Based on the stress fields, a global optimization method to search the critical slip surface in slopes is proposed by parallel recombination simulated annealing algorithm. The method can be applied to slopes with any configuration, different layering and external load distribution. The parallel recombination simulated annealing algorithm is an effective combination of simulated annealing algorithm and genetic algorithm. The algorithm displays inherent parallelism, iterates a population of solutions rather than a single solution, and consistently converges to global optimum. The feasibility and efficiency of the proposed method are finally demonstrated with the stability analysis of a real landslide case.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第9期1554-1558,共5页
Rock and Soil Mechanics
基金
水利部科技创新基金(No.SCX2003-21)。
关键词
边坡稳定分析
临界滑动面
自适应有限元
并行组合模拟退火算法
slope stability analysis
critical slip surface
adaptive finite element method
parallel recombination simulated annealing algorithm
