Tong, C.; Meng, Y.; Chen, G., and Yan, S., 2017. Spectral analysis of wave uplift load on exposed jetties in waves and currents. In: Lee, J.L.; Griffiths, T.; Lotan, A.; Suh, K.-S., and Lee, J. (eds.), The 2nd International Water Safety Symposium. Journal of Coastal Research, Special Issue No. 79, pp. 279–283. Coconut Creek (Florida), ISSN 0749-0208.
This paper presents the results of an experimental investigation on the effect of the interaction of currents with oblique waves on wave uplift load spectrum. A series of laboratory tests were carried out in a wave tank for jetty model in various conditions of wave and current. It is shown that the peak spectral density of wave uplift load is modified due to the influence of angle of wave attack. The variation of measured wave uplift load spectrum with the current direction indicates strong current influence on waves. The results reveal that current and oblique wave change the zeroth spectral moment of wave uplift load. The asymmetry in the values of the relative zeroth moment of wave uplift load m0(F)/(ρgHsA)2 with respect to the angle of wave attack 90-α is observed in current field. Higher m0(F)/(ρgHsA)2 was measured when generating waves against current while lower m0(F)/(ρgHsA)2 was measured when generating waves along current. Higher deck has a smaller m0(F)/(ρgHsA)2 with lesser energy compared to lower deck.