Influence of heterogeneity on 3D slope reliability and failure consequence
文献类型：期刊论文
| 作者 | Hicks, M. A.1; Nuttall, J. D.1; Chen, J.2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2014 |
| 卷号 | 61页码:198-208 |
| 关键词 | Failure consequence Finite elements Heterogeneity Monte Carlo Reliability Risk Slope stability Stochastic analysis |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2014.05.004 |
| 英文摘要 | This paper investigates the influence of heterogeneity of undrained shear strength on the reliability of, and risk posed by, a long slope cut in clay, for different depths of foundation layer. The clay has been idealised as a linear elastic, perfectly plastic Von Mises material and its spatial variability has been modelled using random field theory, whereas slope performance has been computed using a parallel 3D finite element program. The results of Monte Carlo simulations confirm previous findings that three categories of failure mode are possible and that these are significantly influenced by the horizontal scale of fluctuation relative to the slope geometry. In particular, discrete 3D failures are likely for intermediate scales of fluctuation and, in this case, reliability is a function of slope length. The risk posed by potential slides has been quantified in terms of slide volumes and slide lengths, which have been estimated by considering the computed out-of-face displacements. The results show that, for a given horizontal scale of fluctuation relative to the slope geometry, there is a wide range of possible slide volumes and slide geometries. Indeed, the results highlight just how difficult it is to compute a 2D slope failure in a heterogeneous soil. However, they also indicate that, for low probabilities of failure, the volumes of potential slides can be small. This suggests that, for some problems, it may not be necessary to design to very small probabilities of failure, due to the reduced consequence of failure in this case. The techniques developed in this paper will be important in benchmarking simpler 2D and 3D solutions used in design, as there is a need to quantify slide geometries when benchmarking simpler methods based on predefined failure mechanisms. (C) 2014 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000340305100020 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3622]  |
| 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.Delft Univ Technol, Fac Civil Engn & Geosci, Sect Geoengn, Dept Geosci & Engn; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Hicks, M. A.,Nuttall, J. D.,Chen, J.. Influence of heterogeneity on 3D slope reliability and failure consequence[J]. COMPUTERS AND GEOTECHNICS,2014,61:198-208. |
| APA | Hicks, M. A.,Nuttall, J. D.,&Chen, J..(2014).Influence of heterogeneity on 3D slope reliability and failure consequence.COMPUTERS AND GEOTECHNICS,61,198-208. |
| MLA | Hicks, M. A.,et al."Influence of heterogeneity on 3D slope reliability and failure consequence".COMPUTERS AND GEOTECHNICS 61(2014):198-208. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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