Numerical simulation of the coupled dynamic response of a submerged floating tunnel with mooring lines in regular waves OTHER

Title
Numerical simulation of the coupled dynamic response of a submerged floating tunnel with mooring lines in regular waves
Alternative Title
Numerical simulation of the coupled dynamic response of a submerged floating tunnel with mooring lines in regular waves
Author(s)
Cristian Cifuentes; 김승준; 김무현; 박우선
KIOST Author(s)
Park, Woo Sun(박우선)
Publication Year
2015
Abstract
In the present study, the coupled dynamic response of a Submerged Floating Tunnel (SFT) and mooring lines under regular waves is solved by using two independent numerical simulation methods, OrcaFlex and CHARM3D, in time domain. Variations of Buoyancy to Weight Ratio (BWR), wave steepness/period, and water/submergence depth are considered as design and environmental parameters in the study. Two different mooring-line configurations, vertical and inclined, are studied to find an optimum design in terms of limiting tunnel motions and minimizing mooring-line tension. The numerical results are successfully validated by direct comparison against published experimental data. The results show that tunnel motions and tether tensions grow with wave height and period and decrease with submergence depth.The inclined mooring system is more effective in restricting tunnel motions compared to the vertical mooring system. Overall, the present study demonstrates the feasibility of this type of structure as an alternative to traditional bridges or under-seabed tunnels.of Buoyancy to Weight Ratio (BWR), wave steepness/period, and water/submergence depth are considered as design and environmental parameters in the study. Two different mooring-line configurations, vertical and inclined, are studied to find an optimum design in terms of limiting tunnel motions and minimizing mooring-line tension. The numerical results are successfully validated by direct comparison against published experimental data. The results show that tunnel motions and tether tensions grow with wave height and period and decrease with submergence depth.The inclined mooring system is more effective in restricting tunnel motions compared to the vertical mooring system. Overall, the present study demonstrates the feasibility of this type of structure as an alternative to traditional bridges or under-seabed tunnels.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2631
Bibliographic Citation
Ocean Systems Engineering, v.5, no.2, pp.109 - 123, 2015
Type
Article
Language
English
Related Researcher
Research Interests

Development of harbor structures,Analysis of harbor structures,Design of harbor structures,항만구조물개발,항만구조물해석,항만구조물설계

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