越浪堤后透射波周期特性研究

发布时间：2018-04-02 09:38

  本文选题：越浪堤　切入点：光滑堤　出处：《哈尔滨工程大学学报》2017年11期

【摘要】：为了研究不规则波越过光滑堤后的波周期变化,本文基于近岸波浪传播变形非静压模型分析了相对淹没深度、深水波陡、相对堤顶宽度和坡度对越浪堤波周期变化的影响。根据数值模拟的结果建立了光滑越浪堤波周期透射系数的预测公式。结果表明:堤后平均波周期受高频谐波的影响小于入射波周期;堤顶相对淹没深度以及深水波陡是波周期透射系数的主要影响因子,且与其线性相关;相对堤顶宽度的影响次之,且出水堤时对于波周期透射系数变化的影响大于淹没堤;斜坡坡度对波周期透射系数的影响最不明显。将预测公式得到的预测值与实测值相比,确定性系数高达0.95,表明其良好的预测效果。
[Abstract]:In order to study the periodic variation of irregular waves over smooth embankments, the effects of relative submerged depth, steep deep water wave, relative top width and slope on the periodic variation of surpassing breakwater are analyzed based on the non-static pressure model of wave propagation deformation in the near shore.Based on the results of numerical simulation, a prediction formula for the periodic transmission coefficient of smooth breakwater is established.The results show that the average wave period behind the breakwater is less affected by the high frequency harmonic wave than the incident wave period, the relative submerged depth of the top of the breakwater and the steepness of the deep water wave are the main influencing factors of the wave period transmission coefficient, and are linearly related to the wave period transmission coefficient.The influence of the relative top width on the wave period transmission coefficient is greater than that of the submerged embankment, and the slope slope has the least effect on the wave period transmission coefficient.Comparing the predicted value with the measured value, the deterministic coefficient is as high as 0.95, which shows that it has good prediction effect.
【作者单位】： 天津城建大学天津市软土特性与工程环境重点实验室;天津大学水利工程仿真与安全国家重点实验室;南京水利科学研究院;
【基金】：国家自然科学基金项目(51509177,51609152) 天津市自然科学基金项目(14JCYBJC22100) 天津市建交委科技计划(2013-8)
【分类号】：TV139.2;U656
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本文编号：1699794