岩土力学参数随机场的离散研究

Research on discretion of the random field of rock and soil mechanical parameters

基于岩土力学参数随机场并不一定是平稳弱变异高斯随机场这一事实,应用地质统计学原理并结合随机有限元中三种较常用的随机场离散方法对岩土力学参数随机场的离散作了探讨。由于所提方法是通过对随机场作空间变异性分析来获得随机场的空间结构特征而不是假定随机场为平稳弱变异高斯随机场。

Based on the fact that the random field of rock and soil mechanical parameters is not always the weak and stationary Gaussian random field,a method combining the geostatistical theory with the three commonly used discretion methods in stochastic finite element is proposed to study the discretion of the random field of rock and soil mechanical parameters.Due to the advantage that the spatial characteristics of random field is acquired from the spatial variation analysis but not from the weak and stationary Gaussian hypothesis,so the discretion of random field is more accurate.