摘要
利用一次二阶矩法,考虑可靠性分析模型中随机参数的模糊性,建立了模糊随机可靠性分析模型。利用分解定理,取一系列λ截集,将模糊数转换为一系列区间数进行运算,得到了一种模糊随机可靠度的计算方法。将该法应用到桩的可靠性分析中,实例表明,该方法是合理实用的。
Considering the fuzzy uncertainties of the parameters of stochastic variables, a fuzzy stochastic reliability analysis model is derived based on first-order second-moment method （FOSM）. By introducing λ cut set, fuzzy numbers are converted into a series of interval numbers; by use of which, fuzzy stochastic reliability is calculated. The proposed method is employed to the reliability analysis of pile foundation. Case study shows that this method is theoretically innovative and practically useful.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2008年第7期1993-1996,共4页
Rock and Soil Mechanics
关键词
一次二阶矩法
模糊随机可靠度
λ截集
区间数
桩
FOSM
fuzzy stochastic reliability
λ cut set
interval numbers
pile foundation
