双峰谱波浪模拟及斜坡堤越浪特征

Simulation of Double-peak Wave Spectrum and Overtopping Characteristics of Sloping Breakwater

运用叠加两列不同谱峰周期的不规则波浪的方式模拟双峰谱波浪,选择不同比例周期和波高共16种情况,统计比较代表周期与波高。分别模拟相同波高条件下,低频波谱、代表周期波谱、高频波谱和双峰谱波浪,统计分析斜坡堤的越浪量。结果表明,用统计的代表周期和波高模拟的越浪量与实际双峰谱的差异较大。

Double-peak wave spectrum is simulated by superimposing two irregular waves with different peak spectrum periods,including total 16 conditions based on the wave heights and wave periods with different ratios, which produces representative wave periods and wave heights.The overtopping rate of sloping breakwater is simulated and analyzed respectively under the same wave height but low-frequency wave spectrum,representative period wave spectrum,high-frequency wave spectrum and double-peak wave spectrum.The results show that the overtopping rate simulated by using the statistic value of representative wave periods and wave heights is quite different from real double-peak wave spectrum.