Simulation of cross-correlated non-Gaussian random fields for layered rock mass mechanical parameters

doi:10.1016/j.compgeo.2019.04.012

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	Simulation of cross-correlated non-Gaussian random fields for layered rock mass mechanical parameters
	Chen, Dongfang ; Xu, Dingping ; Ren, Gaofeng ; Jiang, Quan ; Liu, Guofeng ; Wan, Liangpeng ; Li, Ning
	2019
发表期刊	COMPUTERS AND GEOTECHNICS
ISSN	0266-352X
卷号	112 期号:-页码:104-119
摘要	In order to represent the spatial variability of layered rock mass mechanical parameters in Finite Difference Method (FDM) grids, an approach based on the numerical simulation of cross-correlated non-Gaussian random fields was proposed in this paper. First, the discretization of a Gaussian random field was performed using the Karhunen-Loeve (K-L) expansion. Then, the Gaussian random field for layered rock mass parameter was built by geostatistics and the random field size calculation. Next, the cross-correlated non-Gaussian random fields were simulated using Nataf transformation and isoprobabilistic transformation methods. Furthermore, a grid model coupled to the random fields was finally built using regroupment and element traversal methods. The engineering application showed that the spatial variability, autocorrelation, cross-correlation and non-Gaussianity described by the random fields agreed closely with the statistical characteristics. The correspondence between the random fields and grid model verified that the random parameters in the grid model can represent the anisotropy of layered rock mass parameters. This study provides a computational basis for quantitative risk assessment during tunnel excavation in layered rock mass.
关键词	Layered rock mass Spatial variability Random field Karhunen-Loeve expansion
DOI	10.1016/j.compgeo.2019.04.012
收录类别	SCI
语种	英语
WOS研究方向	Computer Science ; Engineering ; Geology
WOS类目	Computer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000474323800011
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.198/handle/2S6PX9GI/14933
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Wuhan Univ Technol, Hubei Prov Key Lab Proc Mineral Resources & Envir, Sch Resources & Environm Engn, Wuhan 430070, Hubei, Peoples R China; 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Chen, Dongfang,Xu, Dingping,Ren, Gaofeng,et al. Simulation of cross-correlated non-Gaussian random fields for layered rock mass mechanical parameters[J]. COMPUTERS AND GEOTECHNICS,2019,112(-):104-119.
APA	Chen, Dongfang.,Xu, Dingping.,Ren, Gaofeng.,Jiang, Quan.,Liu, Guofeng.,...&Li, Ning.(2019).Simulation of cross-correlated non-Gaussian random fields for layered rock mass mechanical parameters.COMPUTERS AND GEOTECHNICS,112(-),104-119.
MLA	Chen, Dongfang,et al."Simulation of cross-correlated non-Gaussian random fields for layered rock mass mechanical parameters".COMPUTERS AND GEOTECHNICS 112.-(2019):104-119.

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