本文選題：畸形波　切入點：雙層水平板式防波堤　出處：《海洋學報》2017年05期

【摘要】：基于物理模型試驗,考慮畸形波參數(shù)、相對板寬、相對波高等影響因素,就畸形波對平頂雙層水平板防波堤作用進行研究。首先對畸形波作用下雙層水平板的波浪力分布特征進行了討論,然后就最大波動壓強、結構最大總垂向力與不規(guī)則波作用進行了對比分析。結果表明,畸形波作用下,雙層水平板最大波動壓力出現(xiàn)在前端迎浪區(qū)域附近,向尾端逐漸遞減。雙層水平板4個受力面的壓力分布不同且有相位差,4個受力面的最大波動壓力時間差約在0.1T_p~0.4T_p范圍內變化。與不規(guī)則波作用比較,畸形波作用沒有顯著改變波壓包絡分布特征,但增大了波壓包絡強度值。試驗范圍內,就最大總力而言,兩者最大總浮托力比值在1.06~2.45間變化;向下的最大總垂向力比值在1.22~2.07之間變化;就波動壓力而言,其增大的幅度與畸形波參數(shù)α_1相關性最強,隨α_1的增大而增大,在α_1=2.04~3.1試驗范圍內,畸形波作用時的最大壓強比不規(guī)則波作用時可約增大20%~80%。就最大波吸力而言,兩者的比值與畸形波參數(shù)α_4相關性最強,隨α_4的增大而減小。在α_4=0.62~0.75試驗范圍內,最大波吸力強度的比值在1.61~0.87范圍內變化。當α_4≤0.72時,畸形波作用時的最大波吸力大于不規(guī)則波作用時的最大波吸力;當α_40.72時則剛好相反。
[Abstract]:Based on the physical model test, the parameters of abnormal wave, the relative plate width and the relative wave height are considered. In this paper, the effect of deformities on the breakwater of flat-top bilayer horizontal plate is studied. Firstly, the wave force distribution characteristics of bilayer horizontal plate under the action of deformities are discussed, and then the maximum wave pressure is discussed. The maximum vertical force of the structure and the action of irregular wave are compared and analyzed. The results show that the maximum wave pressure of the bilevel horizontal plate appears near the front wave area under the action of the deformable wave. The pressure distribution is different and there is phase difference in the four stress planes of the bilayer horizontal plate. The time difference of the maximum wave pressure of the four surfaces changes in the range of 0.1T_p~0.4T_p, which is compared with the action of irregular wave. The distribution of wave pressure envelope was not significantly changed by the action of abnormal wave, but the intensity of wave pressure envelope was increased. In terms of the maximum total force, the ratio of the maximum total buoyant force and the maximum total buoyant force was between 1.06n2.45 and 1.06 ~ 2.45, respectively. The downward ratio of maximum total vertical force varies between 1.22 and 2.07. In terms of wave pressure, the amplitude of increase is the most relevant to the parameter 偽 _ 1 of abnormal wave, and it increases with the increase of 偽 _ 1, in the range of 偽 _ 12.043.1. The maximum pressure under the action of abnormal wave can be increased by about 20% compared with that of irregular wave. In terms of maximum wave suction, the ratio of the two increases most closely to the parameter 偽 _ 4 of the abnormal wave, and decreases with the increase of 偽 _ 4. In the range of 偽 _ 4 ~ (4) ~ (0. 62) ~ (0.75), When 偽 _ 4 鈮，

本文編號：1677041