摘要
本文将分项系数引入重力坝坝基抗滑稳定有限元分析中,将影响坝基抗滑稳定的荷载、材料参数等基本变量的不确定性因素以分项系数的形式计入有限元计算中,并推导出与分项系数相匹配的抗滑稳定安全系数和相应的稳定判断准则。最后基于该方法计算的应力场,应用并行组合模拟退火算法搜索坝基最危险滑动模式及相应的最小安全系数。通过工程实例分析,证明该方法是可行和实用的。
Partial coefficient is introduced into the anti-sliding stability analysis of gravity dams in this paper.The uncertain complication of basic variables such as loads and material parameters is accounted into the FEM analysis as partial coefficients.Based on these coefficients,the anti-sliding factor of gravity dams and the corresponding stability criterion are derived.Finally,based on the stress fields of FEM analysis,the most dangerous sliding mode and the minimum anti-sliding factor are searched by parallel recombination simulated annealing algorithm.The feasibility and practicality of the proposed method are demonstrated by applying the anti-sliding stability analysis to an actual engineering case.
出处
《水力发电学报》
EI
CSCD
北大核心
2009年第4期86-91,共6页
Journal of Hydroelectric Engineering
关键词
水工结构
抗滑稳定分析
有限元法
重力坝
分项系数
最危险滑动模式
hydraulic structure
anti-sliding stability analysis
finite element method
gravity dam
partial coefficient
the most dangerous sliding mode
