作　　者： ; ; ;

机构地区： 西安交通大学建筑工程与力学学院

出　　处： 《岩石力学与工程学报》 2002年第1期13-17,共5页

摘　　要： 根据工程岩土体通常为非均质体,其力学参数具有空间变异二重性,应看成是空间随机场这一事实,对工程岩土体经过分级分区后,各分区岩土力学参数随机场的空间变异性分析以及岩土工程有限元计算中单元体力学参数的条件模拟赋值作了探讨。应用条件模拟法对单元体力学参数进行赋值不仅能同时考虑到岩土力学参数随机场所具有的空间变异二重性特征,而且比克立格法能更真实地再现岩土力学参数随机场所具有的离散性和波动性。 The mechanics parameters of engineering rocks and soils usually are of the property of spatial and random variations due to the heterogeneity and should be considered as the spatial random fields. The researches are made on both the spatial variation analysis of the random fields and the estimations of rock mechanics parameters in elements of FEM by conditional simulation. The advantages of this estimation method are not only that the double characteristics of spatial variations of the random fields are considered, but also that the true dispersions of the random fields could be realized better in the value estimation of the rock mechanics parameters in elements compared with the Kriging method.

关 键 词： 岩土体非均质性 空间变异性 有限元 条件模拟 岩土力学

领　　域： [建筑科学] [建筑科学]