Journal
ENGINEERING STRUCTURES
Volume 266, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2022.114549
Keywords
Floating bridge; Wave-current interaction; Short-crested; Hydroelastic behaviour
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Funding
- Research Council of Norway [268403/O80]
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This paper presents a numerical study on the effect of wave-current interaction on fjord-crossing floating bridges. The dynamic response of the bridge under the combined action of waves and current is analyzed using a three-dimensional potential flow solver. The results show that the wave-current interaction has a significant effect on the structural response of the floating bridge.
Fjord-crossing floating bridges are sophisticated structures subjected to complex environmental loadings including combined action of wave and current. However, the effect of wave-current action is often neglected in a conventional engineering practice. This paper presents a numerical study of the dynamic response of a floating bridge under the combined action of waves and current. The effect of wave-current interaction on the hydrodynamics associated with the bridge pontoons are first evaluated by using a three-dimensional potential flow solver. A model of the entire floating bridge is then established and analysed in the time domain. The accuracy of the model is verified by comparison with available experimental data for a 1 km long curved floating bridge. Parametric studies are subsequently carried out to investigate the effect of wave-current interaction on a 4.6 km long floating bridge model for crossing the Bjornafjord. Results show that the wave-current interaction has a significant effect on a fjord-crossing floating bridge studied in this paper. Neglection of such an interaction could lead to substantial overestimation or underestimation of the structural responses depending on the environmental headings.
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