| Issue |
MATEC Web Conf.
Volume 138, 2017
The 6th International Conference of Euro Asia Civil Engineering Forum (EACEF 2017)
|
|
|---|---|---|
| Article Number | 02026 | |
| Number of page(s) | 7 | |
| Section | 2-Structural and Construction Engineering | |
| DOI | https://doi.org/10.1051/matecconf/201713802026 | |
| Published online | 30 December 2017 | |
The role of cable stiffness in the dynamic behaviours of submerged floating tunnel
1 Ph.D. Candidate, Department of Civil and Environmental Engineering, Hanyang University 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
2 Professor, Department of Civil and Environmental Engineering, Hanyang University 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
* Corresponding author: samga@hanyang.ac.kr
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.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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