Immersed tunnel technique has been developed and successfully applied to the installation of immersed tunnel. During the installation, the tunnel is connected to the dual pontoon floating structures (DPFS) by cables and lowered slowly to the tunnel trench. Such installations generally involve multi-body dynamics with wave-induced motions and nonlinear constraints. This paper establishes a time domain model for the immersed tunnel installation based on a linear potential flow approach. The mooring lines are simplified as linear undamped springs with constant stiffness. More attention has been paid to simulate the marine cables, which are modelled by the lumped mass method as well as by bilinear undamped spring. The effects of cable model on the wave-induced dynamics of the given system are discussed. In the numerical simulation, the slack phenomena and snap load of cables are observed and reveal the rich and complex dynamical behaviors of the immersed tunnel installation.
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ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2016
Busan, South Korea
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4998-9
PROCEEDINGS PAPER
Nonlinear Dynamics in Immersed Tunnel Installation Under Regular Waves
Zhihuan Hu,
Zhihuan Hu
Shanghai JiaoTong University, Shanghai, China
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Xin Li,
Xin Li
Shanghai JiaoTong University, Shanghai, China
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Haining Lu,
Haining Lu
Shanghai JiaoTong University, Shanghai, China
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Jun Li,
Jun Li
Shanghai JiaoTong University, Shanghai, China
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Shaobo Wu,
Shaobo Wu
China Communications Construction Company Ltd., Beijing, China
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Fan Zhang
Fan Zhang
DNV GL - Software, Oslo, Norway
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Zhihuan Hu
Shanghai JiaoTong University, Shanghai, China
Xin Li
Shanghai JiaoTong University, Shanghai, China
Haining Lu
Shanghai JiaoTong University, Shanghai, China
Jun Li
Shanghai JiaoTong University, Shanghai, China
Shaobo Wu
China Communications Construction Company Ltd., Beijing, China
Fan Zhang
DNV GL - Software, Oslo, Norway
Paper No:
OMAE2016-54558, V007T06A058; 9 pages
Published Online:
October 18, 2016
Citation
Hu, Z, Li, X, Lu, H, Li, J, Wu, S, & Zhang, F. "Nonlinear Dynamics in Immersed Tunnel Installation Under Regular Waves." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: Ocean Engineering. Busan, South Korea. June 19–24, 2016. V007T06A058. ASME. https://doi.org/10.1115/OMAE2016-54558
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