The role of cable stiffness in the dynamic behaviours of submerged floating tunnel

Naik Muhammad, Zahid Ullah, Min Wo Park, Dong Ho Choi

Research output: Contribution to journalConference article

Abstract

Submerged floating tunnel (SFT) is a new solution for the transportation infrastructure through sea straits, fjords, and inland waters and can be a good alternative to long span suspension bridges and immersed tunnels. The mooring cables/anchors are main structural components to provide restoring capacity to the SFT. The time domain dynamic problem of SFT moored by vertical and inclined mooring cables/anchors is formulated. The dynamic analysis of SFT subjected to hydrodynamic and seismic excitations is performed. As the cable stiffness determines the deformation ability of SFT, therefore it becomes crucial to evaluate the effect of mooring cable stiffness on the response of SFT. The displacements and internal forces of SFT clearly specify that the vertical/tension leg mooring cables provide very small stiffness as compared to inclined mooring cables. In order to keep the SFT displacements within an acceptable limit, the effect of cable stiffness should be properly evaluated for practical design of SFT.

Original languageEnglish
Article number02026
JournalMATEC Web of Conferences
Volume138
DOIs
StatePublished - 2017 Dec 30
Event6th International Conference of Euro Asia Civil Engineering Forum, EACEF 2017 - Seoul, Korea, Republic of
Duration: 2017 Aug 222017 Aug 25

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Mooring cables
Tunnels
Cables
Stiffness
Anchors
Suspension bridges
Dynamic analysis
Hydrodynamics
Water

Cite this

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abstract = "Submerged floating tunnel (SFT) is a new solution for the transportation infrastructure through sea straits, fjords, and inland waters and can be a good alternative to long span suspension bridges and immersed tunnels. The mooring cables/anchors are main structural components to provide restoring capacity to the SFT. The time domain dynamic problem of SFT moored by vertical and inclined mooring cables/anchors is formulated. The dynamic analysis of SFT subjected to hydrodynamic and seismic excitations is performed. As the cable stiffness determines the deformation ability of SFT, therefore it becomes crucial to evaluate the effect of mooring cable stiffness on the response of SFT. The displacements and internal forces of SFT clearly specify that the vertical/tension leg mooring cables provide very small stiffness as compared to inclined mooring cables. In order to keep the SFT displacements within an acceptable limit, the effect of cable stiffness should be properly evaluated for practical design of SFT.",
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The role of cable stiffness in the dynamic behaviours of submerged floating tunnel. / Muhammad, Naik; Ullah, Zahid; Park, Min Wo; Choi, Dong Ho.

In: MATEC Web of Conferences, Vol. 138, 02026, 30.12.2017.

Research output: Contribution to journalConference article

TY - JOUR

T1 - The role of cable stiffness in the dynamic behaviours of submerged floating tunnel

AU - Muhammad, Naik

AU - Ullah, Zahid

AU - Park, Min Wo

AU - Choi, Dong Ho

PY - 2017/12/30

Y1 - 2017/12/30

N2 - Submerged floating tunnel (SFT) is a new solution for the transportation infrastructure through sea straits, fjords, and inland waters and can be a good alternative to long span suspension bridges and immersed tunnels. The mooring cables/anchors are main structural components to provide restoring capacity to the SFT. The time domain dynamic problem of SFT moored by vertical and inclined mooring cables/anchors is formulated. The dynamic analysis of SFT subjected to hydrodynamic and seismic excitations is performed. As the cable stiffness determines the deformation ability of SFT, therefore it becomes crucial to evaluate the effect of mooring cable stiffness on the response of SFT. The displacements and internal forces of SFT clearly specify that the vertical/tension leg mooring cables provide very small stiffness as compared to inclined mooring cables. In order to keep the SFT displacements within an acceptable limit, the effect of cable stiffness should be properly evaluated for practical design of SFT.

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