An improved analytical solution for solving the shield tunnel uplift problem
文献类型：期刊论文
| 作者 | Wang, Bin4,5; Li, Jietao4,5; Zhao, Chenyang2,3; Wang, Jun1 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 16期号:11页码:4570-4585 |
| 关键词 | Analytical solution Conceptual model Matrix transfer method Shield tunnel Timoshenko beam theory Tunnel uplift |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2024.05.011 |
| 英文摘要 | The problem of shield tunnel uplift is a common issue in tunnel construction. Due to the decrease in shear stiffness at the joints between the rings, uplift is typically observed as bending and dislocation deformation at these joints. Existing modeling methods typically rely on the Euler-Bernoulli beam theory, only considering the bending effect while disregarding shear deformation. Furthermore, the constraints on the shield tail are often neglected in existing models. In this study, an improved theoretical model of tunnel floating is proposed. The constraint effect of the shield machine shell on the tunnel structure is considered using the structural forms of two finite long beams and one semi-infinite long beam. Furthermore, the Timoshenko beam theory is adopted, providing a more accurate description of tunnel deformation, including both the bending effect and shear deformation, than existing models. Meanwhile, the buoyancy force and stratum resistance are calculated in a nonlinear manner. A reliable method for calculating the shear stiffness correction factor is proposed to better determination of the calculation parameters. The proposed theoretical model is validated through five cases using sitemonitored data. Its applicability and effectiveness are demonstrated. Furthermore, the influences of soil type, buried depth, and buoyancy force on the three key indicators of tunnel floating (i.e. the maximum uplift magnitude, the ring position with the fastest uplift race, and the ring position with the maximum uplift magnitude) are analyzed. The results indicate that the proposed model can provide a better understanding of the floating characteristics of the tunnel structure during construction. (c) 2024 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Published 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[52379111] ; National Natural Science Foundation of China[51979270] ; National Natural Science Foundation of China[52208380] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001390637500001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37718]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Bin; Zhao, Chenyang |
| 作者单位 | 1.Jiangsu Prov Transportat Engn Construction Bur, Nanjing 210004, Peoples R China 2.Sun Yat Sen Univ, State Key Lab Tunnel Engn, Guangzhou 510275, Peoples R China 3.Sun Yat Sen Univ, Guangdong Res Ctr Underground Space Exploitat Tech, Sch Civil Engn, Guangzhou 510275, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.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 | Wang, Bin,Li, Jietao,Zhao, Chenyang,et al. An improved analytical solution for solving the shield tunnel uplift problem[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(11):4570-4585. |
| APA | Wang, Bin,Li, Jietao,Zhao, Chenyang,&Wang, Jun.(2024).An improved analytical solution for solving the shield tunnel uplift problem.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(11),4570-4585. |
| MLA | Wang, Bin,et al."An improved analytical solution for solving the shield tunnel uplift problem".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.11(2024):4570-4585. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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