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海啸波在近海传播过程中有可能会演化成若干个孤立波组成的波列。为了研究孤立波波列对海岸结构物的作用机理,本文在波浪水槽中进行了双孤立波的直墙爬高实验。通过控制推板式造波机的运动,有效地实现了不同波峰间距双孤立波的造波方法。在复演并验证单孤立波直墙爬高的基础上,完成了不同相对波高、相对波峰间距的双孤立波爬高系列实验,给出了双孤立波平底传播及直墙爬高过程的波面时间序列及爬高过程水线运动时间序列。实验结果表明:对两个等波高的双孤立波而言,当相对波峰间距降到某临界值时,跟随在后孤立波的爬高放大系数将小于先导孤立波的爬高放大系数;当先导孤立波的波高大于跟随孤立波的波高,先导孤立波将更加显著地抑制对跟随孤立波的爬高过程,使得后者的最高爬放大系数显著减小;若在直墙爬高前两个波已明显重叠,即呈双峰瞬态波形,爬高放大系数不会大于具有相同波高的单孤立波的爬高放大系数。
It is possible that a tsunami wave may evolve into a wave train consisting of several isolated waves during the offshore propagation. In order to study the action mechanism of isolated Bobble columns on coastal structures, this paper carried out a double-wall straight wave climbing experiment in a wave tank. By controlling the movement of push plate wave generator, the method of wave making with double solitary wave with different peak spacing is effectively realized. Based on the rehearsal and verification of single solitary wave straight wall climbing height, a series of double-solitary wave climbing experiments with different relative wave heights and relative peak spacings were completed. The wave front of double solitary wave flat bottom propagation and straight wall climbing was given. Time Series and Climbing Process Waterline Time Series. The experimental results show that when the relative peak spacing decreases to a certain critical value, the amplification and amplification coefficients of the following solitary wave will be smaller than those of the leading solitary wave. The wave height of the solitary wave is larger than the wave height of the solitary wave, and the leading solitary wave will more significantly suppress the climbing process of the following solitary wave, resulting in the maximum coefficient of the latter climbing significantly decreasing. Has been significantly overlapped, that is, a bimodal transient waveform, climbing amplification factor will not be greater than the single wave with the same wave height climbing amplification factor.