Simulation of cross-correlated non-Gaussian random fields for layered rock mass mechanical parameters
文献类型：期刊论文
| 作者 | Chen, Dongfang; Xu, Dingping; Ren, Gaofeng; Jiang, Quan; Liu, Guofeng; Wan, Liangpeng; Li, Ning |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2019 |
| 卷号 | 112期号:-页码:104-119 |
| 关键词 | Layered rock mass Spatial variability Random field Karhunen-Loeve expansion |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2019.04.012 |
| 英文摘要 | 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. |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000474323800011 |
| 源URL | [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. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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