Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current
Submerged floating tunnel (SFT) is an innovative underwater structure for crossing long straits, which withstands the effects of water wave and current throughout its lifecycle. This paper proposes a theoretical approach to investigate the nonlinear dynamic response of the SFT tube-cable system unde...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-08-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/8/8/1311 |
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| author | Zhengyang Chen Yiqiang Xiang Heng Lin Ying Yang |
| author_facet | Zhengyang Chen Yiqiang Xiang Heng Lin Ying Yang |
| author_sort | Zhengyang Chen |
| collection | DOAJ |
| description | Submerged floating tunnel (SFT) is an innovative underwater structure for crossing long straits, which withstands the effects of water wave and current throughout its lifecycle. This paper proposes a theoretical approach to investigate the nonlinear dynamic response of the SFT tube-cable system under combined parametric excitation and hydrodynamic forcing excitations (i.e., wave and vortex-induced loading). Firstly, the governing equations of the SFT system considering the coupled degrees of freedom in the tube and cable are established based on the Hamilton principle and are solved numerically. Then, several representative cases are analyzed to reveal the dynamic characteristics of the SFT. Finally, some key parameters are discussed, such as the wave and current conditions and the structural parameters. The results show that when the flow velocity reaches a certain value, the vortex-induced vibration (VIV) of the anchor-cables will excite a strong resonance in the structure. The displacement amplitude of the SFT increases with the increase of the wave height. Gravity-buoyance ratio (GBR) of the tube and the inclined mooring angle (IMA) of the cables jointly determine the natural vibration frequency of the SFT. The influence of the wave force on the tube is limited when the installation depth of SFT is more than 40 m. |
| first_indexed | 2024-12-21T15:55:13Z |
| format | Article |
| id | doaj.art-9a16f786b62f4466a0ed1129326ad084 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-21T15:55:13Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-9a16f786b62f4466a0ed1129326ad0842022-12-21T18:58:08ZengMDPI AGApplied Sciences2076-34172018-08-0188131110.3390/app8081311app8081311Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and CurrentZhengyang Chen0Yiqiang Xiang1Heng Lin2Ying Yang3College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaSubmerged floating tunnel (SFT) is an innovative underwater structure for crossing long straits, which withstands the effects of water wave and current throughout its lifecycle. This paper proposes a theoretical approach to investigate the nonlinear dynamic response of the SFT tube-cable system under combined parametric excitation and hydrodynamic forcing excitations (i.e., wave and vortex-induced loading). Firstly, the governing equations of the SFT system considering the coupled degrees of freedom in the tube and cable are established based on the Hamilton principle and are solved numerically. Then, several representative cases are analyzed to reveal the dynamic characteristics of the SFT. Finally, some key parameters are discussed, such as the wave and current conditions and the structural parameters. The results show that when the flow velocity reaches a certain value, the vortex-induced vibration (VIV) of the anchor-cables will excite a strong resonance in the structure. The displacement amplitude of the SFT increases with the increase of the wave height. Gravity-buoyance ratio (GBR) of the tube and the inclined mooring angle (IMA) of the cables jointly determine the natural vibration frequency of the SFT. The influence of the wave force on the tube is limited when the installation depth of SFT is more than 40 m.http://www.mdpi.com/2076-3417/8/8/1311submerged floating tunnel (SFT)coupling effectparametric vibrationvortex-induced vibrationwave force |
| spellingShingle | Zhengyang Chen Yiqiang Xiang Heng Lin Ying Yang Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current Applied Sciences submerged floating tunnel (SFT) coupling effect parametric vibration vortex-induced vibration wave force |
| title | Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current |
| title_full | Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current |
| title_fullStr | Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current |
| title_full_unstemmed | Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current |
| title_short | Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current |
| title_sort | coupled vibration analysis of submerged floating tunnel system in wave and current |
| topic | submerged floating tunnel (SFT) coupling effect parametric vibration vortex-induced vibration wave force |
| url | http://www.mdpi.com/2076-3417/8/8/1311 |
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