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以随机有限元法为基础,将确定性渗流场的参数视为随机变量,导出了随机渗流场的基本列式,同时推出了渗流场随机水头的均值、方差、协方差以及水头对随机变量偏导的公式,为了与结构随机分析相结合,又导出了随机渗透结点力的均值、方差与协方差及其对随机变量的偏导.
Based on stochastic finite element method, the parameters of deterministic seepage field are regarded as random variables, and the basic formulas of stochastic seepage field are deduced. At the same time, the mean, variance and covariance of random head of seepage field are deduced. In order to combine with stochastic analysis of structure, the mean, variance and covariance of stochastic seepage force and their partial derivatives to stochastic variables are deduced.