Variation of segment joint opening of underwater shield tunnel during long operational period
文献类型：期刊论文
| 作者 | Ye, Wei1,2; Yang, Jian-Ping2; Chen, Wei-Zhong2 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 153页码:11 |
| 关键词 | Joint stiffness degradation Monitoring Segment joint Underwater shield tunnel Warning index |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2024.105976 |
| 英文摘要 | Segment joint is the main water leakage channel in underwater shield tunnels, and joint deformation influences tunnel waterproof capacity greatly. Real-time structure health monitoring is a great way to investigate the joint opening and to offer early warnings for abnormality, such as data outlier and joint properties degradation. This study investigated the variation of joint opening, provided early warning indexes and evaluated the joint mechanical properties degradation using the field monitoring data of an underwater shield tunnel over 10 years, which is rarely seen in the literature. Study results show that: (1) Field monitoring data reveals that the distribution of joint opening increments obeys a heavy-tailed distribution rather than the normal distribution. The exponential distribution model and the log normal distribution model can fit the longitudinal joint increments and circumferential joint increments much better. (2) The early warning index is determined based on the statistic theory and 0.999 quantile is set as the warning value. The obtained warning values of the studied underwater tunnel are 0.005 mm and 0.08 mm for the longitudinal and circumferential joint respectively. The small warning value means that small abnormality can be identified and the early warning would be more efficient. (3) A mechanical model is proposed to evaluate the joint mechanical properties degradation based on monitoring data. Results show that normal stiffness of circumferential joint decreases from 18.3 GPa/m to 14.7 GPa/m. Results of this study provides valuable reference for early-warning and joint degradation evaluation of under water shield tunnel. |
| 资助项目 | National Natural Science Foundation of China[42277184] ; National Natural Science Foundation of China[42293355] ; National Natural Science Foundation of China[42293350] ; Key Deployment Projects of Chinese Academy of Sciences[ZDRW-ZS-2021-3] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001284422800001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42147]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Jian-Ping |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Wei,Yang, Jian-Ping,Chen, Wei-Zhong. Variation of segment joint opening of underwater shield tunnel during long operational period[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2024,153:11. |
| APA | Ye, Wei,Yang, Jian-Ping,&Chen, Wei-Zhong.(2024).Variation of segment joint opening of underwater shield tunnel during long operational period.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,153,11. |
| MLA | Ye, Wei,et al."Variation of segment joint opening of underwater shield tunnel during long operational period".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 153(2024):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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