Dynamic response characteristics of pier-type submerged floating tunnels (PSFTs) under horizontal and vertical earthquakes
文献类型：期刊论文
| 作者 | Lu, Yan2,3; Liu, Zhanxiang2; Xu, Wanhai2,3; Ma YX(马烨璇)1 |
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2025-11-30 |
| 卷号 | 340页码:18 |
| 关键词 | Pier-type submerged floating tunnels (PSFTs) Earthquake Seismic response Newmark-beta method Flexible joint stiffness Bearing stiffness |
| ISSN号 | 0029-8018 |
| DOI | 10.1016/j.oceaneng.2025.122373 |
| 通讯作者 | Xu, Wanhai(xuwanhai@tju.edu.cn) |
| 英文摘要 | Pier-type submerged floating tunnels (PSFTs) represent an innovative structural solution for underwater transportation, exhibiting distinct advantages and broad application prospects. To achieve a comprehensive understanding of PSFTs, evaluating the structural response of PSFTs under earthquakes is essential. This study proposes a simplified mechanical model of PSFTs considering tunnel tubes, flexible joints, bearings, and piers. The model is employed to analyse the seismic response of multispan PSFT tubes under horizontal and vertical earthquakes. A dynamic response analysis method is proposed for the seismic response calculation of PSFTs using the finite element method and the Newmark-beta method. On this basis, the modal characteristics and seismic response characteristics of PSFTs under various earthquakes are acquired. The effects of structural parameters on the seismic responses of PSFTs are further studied. The first 14 order modes are recommended for greater emphasis in dynamic analysis. The seismic response of the PSFTs is more pronounced in the horizontal direction than in the vertical direction. The vertical responses are minimal because of the suppression of the fluid inertia force. Hence, it is imperative to evaluate its responses in both the horizontal and vertical directions in seismic analysis. With respect to the structural parameters, larger span lengths contribute to increased span responses. The flexible joint stiffness substantially influences the bending moment response of the PSFTs, whereas the bearing spring stiffness considerably affects their displacement response. |
| 分类号 | 一类 |
| WOS关键词 | SEISMIC RESPONSES ; MOTIONS ; BRIDGE ; WAVE |
| 资助项目 | National Natural Science Foundation of China[U2106223] ; National Natural Science Foundation of China[52525110] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001558394300002 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Xu, Wanhai |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103659]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Tianjin Univ, Sch Civil Engn, Tianjin 300350, Peoples R China; 3.Tianjin Univ, State Key Lab Hydraul Engn Intelligent Construct &, Tianjin 300350, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Lu, Yan,Liu, Zhanxiang,Xu, Wanhai,et al. Dynamic response characteristics of pier-type submerged floating tunnels (PSFTs) under horizontal and vertical earthquakes[J]. OCEAN ENGINEERING,2025,340:18. |
| APA | Lu, Yan,Liu, Zhanxiang,Xu, Wanhai,&马烨璇.(2025).Dynamic response characteristics of pier-type submerged floating tunnels (PSFTs) under horizontal and vertical earthquakes.OCEAN ENGINEERING,340,18. |
| MLA | Lu, Yan,et al."Dynamic response characteristics of pier-type submerged floating tunnels (PSFTs) under horizontal and vertical earthquakes".OCEAN ENGINEERING 340(2025):18. |
入库方式： OAI收割
来源：力学研究所
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