The Optimization of Secondary Lining Construction Time for Shield Tunnels Based on Longitudinal Mechanical Properties
文献类型：期刊论文
| 作者 | Chai, Shaobo3; Yan, Yifan3; Hu, Bo1,3; Wang, Hongchao4; Hu, Jun1,3; Chen, Jian1,2; Fu, Xiaodong1,2; Zhou, Yongqiang1,2 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 13期号:19页码:25 |
| 关键词 | shield tunnel double-layered lining refined numerical model secondary lining construction time longitudinal mechanical properties |
| DOI | 10.3390/app131910772 |
| 英文摘要 | In the field of shield tunnels, the occurrence of uneven longitudinal settlement in segment linings has presented persistent challenges, including heightened risks of localized damage and water leakage. While the adoption of a secondary lining has been proposed as a viable solution to these issues, the question of how to select an appropriate construction time for the secondary lining, one that enables it to fully harness its load-bearing capacity while optimizing the tunnel's overall stress and deformation characteristics, continues to be a pressing concern. To address this issue, this study established a three-dimensional longitudinal refined numerical model of double-layer-lined shield tunnel. In addition, the deformation degree of the segment lining was used as a time indicator to define the construction time for the secondary lining. Subsequently, an analysis of the impact of the construction time of the secondary lining on the longitudinal mechanical properties of the double-layer-lined shield tunnel is conducted through an assessment of tunnel longitudinal deformation and structural stress. The research findings indicated that the construction of the secondary lining improved the longitudinal deformation resistance of shield tunnels. Simultaneously, it led to a significant increase in the longitudinal shear forces within the segment lining and a notable reduction in longitudinal bending moments. Moreover, the construction time of the secondary lining played a pivotal role in these alterations. Considering the longitudinal force situations and load-bearing characteristics of the double-layer lining structure, it was determined that the optimal construction time for the secondary lining fell within the range of 20% to 40% of the total construction duration. In this scenario, the deformation and internal forces within the segment lining remained within permissible limits. Additionally, both the segment lining and the secondary lining were able to fully utilize their load-bearing capacities, ensuring the economic and safety aspects of the tunnel. |
| 资助项目 | National Natural Science Foundation of China[52079135] ; Natural Science Basic Research Plan in Shaanxi Province[2020JM-234] ; Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education ; Fundamental Research Funds for the Central Universities, CHD[300102282201] |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001097498100001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39892]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Hu, Bo |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Changan Univ, Sch Civil Engn, Xian 710064, Peoples R China 4.China Railway Eryuan Engn Grp Co Ltd, Chengdu 610031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chai, Shaobo,Yan, Yifan,Hu, Bo,et al. The Optimization of Secondary Lining Construction Time for Shield Tunnels Based on Longitudinal Mechanical Properties[J]. APPLIED SCIENCES-BASEL,2023,13(19):25. |
| APA | Chai, Shaobo.,Yan, Yifan.,Hu, Bo.,Wang, Hongchao.,Hu, Jun.,...&Zhou, Yongqiang.(2023).The Optimization of Secondary Lining Construction Time for Shield Tunnels Based on Longitudinal Mechanical Properties.APPLIED SCIENCES-BASEL,13(19),25. |
| MLA | Chai, Shaobo,et al."The Optimization of Secondary Lining Construction Time for Shield Tunnels Based on Longitudinal Mechanical Properties".APPLIED SCIENCES-BASEL 13.19(2023):25. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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