Effects of fundamental structure parameters on dynamic responses of submerged floating tunnel under hydrodynamic loads
- 225 Downloads
This paper investigates the effects of structure parameters on dynamic responses of submerged floating tunnel (SFT) under hydrodynamic loads. The structure parameters includes buoyancy-weight ratio (BWR), stiffness coefficients of the cable systems, tunnel net buoyancy and tunnel length. First, the importance of structural damp in relation to the dynamic responses of SFT is demonstrated and the mechanism of structural damp effect is discussed. Thereafter, the fundamental structure parameters are investigated through the analysis of SFT dynamic responses under hydrodynamic loads. The results indicate that the BWR of SFT is a key structure parameter. When BWR is 1.2, there is a remarkable trend change in the vertical dynamic response of SFT under hydrodynamic loads. The results also indicate that the ratio of the tunnel net buoyancy to the cable stiffness coefficient is not a characteristic factor affecting the dynamic responses of SFT under hydrodynamic loads.
KeywordsSubmerged floating tunnel Structural damp Buoyancy-weight ratio Cable stiffness coefficient Tunnel net buoyancy Hydrodynamic load
Unable to display preview. Download preview PDF.
- 2.Huang, G.J., Wu, Y.X., Hong, Y.S.: Transportation of crossing waterways via Archimedes bridges. Ship Build. China 43 (supplement), 13–18 (2002) (in Chinese)Google Scholar
- 3.Mai J.T., Yang X.C., Guan B.S.: Dynamic response analysis of the submerged floating tunnel subjected to wave. J. Railw. Eng. Soc. 102, 45–49 (2007) (in Chinese)Google Scholar
- 5.Hui, L.: Dynamic response of submerged floating tunnel under accident loading. [M.S. Dissertation], Institute of Mechanics, Graduate University of Chinese Academy of Sciences, Beijing, China (2007) (in Chinese)Google Scholar
- 6.Chinese team of SIJLAB: Report of Research and Design for Archimedes Bridge Prototype at Qiandao Lake. Beijing, China, SIJLAB (2007)Google Scholar
- 7.Italian team of SIJLAB: Design Report of the Archimede’s Bridge Prototype in Qiandao Lake (P.R. of China). Italy, SIJLAB (2007)Google Scholar
- 8.Bi, J.J.: Introduction to Offshore Mechanics. Tongji University Press, Shanghai, China (1989) (in Chinese)Google Scholar
- 9.Hallam, M.G., Heaf, N.J., Wootton, L.R.: Dynamics of Marine Structures, report UR8, 2nd edn. CIRIA Underwater Engineering Group (1978)Google Scholar
- 10.Ge, F.: Dynamic response of submerged floating tunnel under wave and current conditions. [Ph.D. Dissertation], Institute of Mechanics, Graduate University of Chinese Academy of Sciences, Beijing, China (2006) (in Chinese)Google Scholar
- 11.Susumu, M., Akihide, T., Yuzo, M., Hiroshi, K., Toshihiko, Y., Hiroshi, S.: Experimental study on characteristics of submerged floating tunnels under regular waves. In: Proceeding 3rd Symposium on Strait Crossings, Alesund, pp. 667–674 (1994)Google Scholar
- 12.Long, X., Ge, F., Wang, L., Hong, Y.S.: Dynamic response of submerged floating tunnel with different buoyancy-weight ratios under wave and current loads. In: Proceedings of the Seventeenth National Conference on Structural Engineering (III), Wuhan, China, pp. 556–561 (2008) (in Chinese)Google Scholar
- 13.Kanie, S., Mikami, T.: Effect of non-linearity in restoring force on dynamic response of SFT. In: Proceeding 4th Symposium on Strait Crossings, Bergen, Norway, pp. 529–534 (2001)Google Scholar