Experimental study on dynamic response of submerged floating tunnel moored with different material cables
Li C. Wu Z. Xie C. Garg A. Zhao X. Chen J. Mei G.
15 June 2025Elsevier Ltd
Ocean Engineering
2025#329
The cables of the cable-moored type Submerged floating tunnel (SFT) are one of the main load-bearing carriers. Therefore, the selection of appropriate cable material is the key for ensuring the security and stability of SFT. This study aims to investigate the effects of five different cable materials—Steel, Chain, Nylon, Aramid, and CFRP—on the dynamic response of SFT. The physical scale segment model of SFT moored with the five cable materials is designed for systematic experimental research. A series of model test conditions (i.e., wave current parameter, pretension, cable failure, etc) are adopted for a comparative analysis of the dynamic response and cable tension of the SFTs. The result shows the tubes natural frequency for the five models in the sway and roll directions are similar (i.e., 1.4 Hz) and the cable damping of Chain is 10 times more than that of CFRP. Generally, the mooring restraint capacity, from the best to the worst, is as follows: Chain, Steel, CFRP, Aramid, and Nylon. During the failure of the cable, Aramid exhibits the highest dynamic coefficient, while CFRP exhibits the lowest. This study has significant engineering relevance for the design of cable materials for SFT in complex marine environments.
Cable failure , Cable material , Dynamic response , Submerged floating tunnel
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Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Structural Safety, College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, China
Guangxi Key Laboratory of International Join for China-ASEAN Comprehensive Transportation, Nanning University, Guangxi, Nanning, 530000, China
Guangdong Engineering Center for Structure Safety and Health Monitoring, Shantou University, China
L.N Gumilyov Eurasian National University, Astana, Kazakhstan
The Hong Kong Polytechnic University, Hong Kong
Ocean College, Zhejiang University, Zhejiang, Zhoushan, 316021, China
Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education
Guangxi Key Laboratory of International Join for China-ASEAN Comprehensive Transportation
Guangdong Engineering Center for Structure Safety and Health Monitoring
L.N Gumilyov Eurasian National University
The Hong Kong Polytechnic University
Ocean College
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