Displacement-based back analysis of mitigating the effects of displacement loss in underground engineering
文献类型：期刊论文
| 作者 | Li, Hui; Chen, Weizhong; Tan, Xianjun |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 15期号:10页码:2626-2638 |
| 关键词 | Rock mass Intelligent back analysis Geomechanical parameters Displacement loss Underground engineering |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2022.12.036 |
| 英文摘要 | Displacement-monitoring-based back analysis is a popular method for geomechanical parameter estimation. However, due to the delayed installation of multi-point extensometers, the monitoring curve is only a part of the overall one, leading to displacement loss. Besides, the monitoring and construction time on the monitoring curve is difficult to determine. In the literature, the final displacement was selected for the back analysis, which could induce unreliable results. In this paper, a displacement-based back analysis method to mitigate the influence of displacement loss is developed. A robust hybrid optimization algorithm is proposed as a substitute for time-consuming numerical simulation. It integrates the strengths of the nonlinear mapping and prediction capability of the support vector machine (SVM) algorithm, the global searching and optimization characteristics of the optimized particle swarm optimization (OPSO) algorithm, and the nonlinear numerical simulation capability of ABAQUS. To avoid being trapped in the local optimum and to improve the efficiency of optimization, the standard PSO algorithm is improved and is compared with other three algorithms (genetic algorithm (GA), simulated annealing (SA), and standard PSO). The results indicate the superiority of OPSO algorithm. Finally, the hybrid optimization algorithm is applied to an engineering project. The back-analyzed parameters are submitted to numerical analysis, and comparison between the calculated and monitoring displacement curve shows that this hybrid algorithm can offer a reasonable reference for geomechanical parameters estimation. (c) 2023 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/). |
| 资助项目 | National Natural Science Foundation of China[51922104] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001070907400010 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39595]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Weizhong |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Hui,Chen, Weizhong,Tan, Xianjun. Displacement-based back analysis of mitigating the effects of displacement loss in underground engineering[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2023,15(10):2626-2638. |
| APA | Li, Hui,Chen, Weizhong,&Tan, Xianjun.(2023).Displacement-based back analysis of mitigating the effects of displacement loss in underground engineering.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,15(10),2626-2638. |
| MLA | Li, Hui,et al."Displacement-based back analysis of mitigating the effects of displacement loss in underground engineering".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 15.10(2023):2626-2638. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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