含植物四脚空心块斜坡消浪性能试验研究  

Experimental Study of Wave Attenuation by Quadrangular Hollow-Block Breakwater

作　　者：胡淼 兰立伟 闫银旺 杨亚菲 罗敏[5] 冯兴亚 Hu Miao;Lan Liwei;Yan Yinwang;Yang Yafei;Luo Min;Feng Xingya(Key Laboratory of Disaster Prevention and Reduction of Zhejiang Province,Hangzhou 310020,China;Research Institute of Hydraulic and River Engineering of Zhejiang Province,Hangzhou 310020,China;Zhejiang Guangchuan Engineering Consulting Ltd,Hangzhou 310020,China;Southern University of Science and Technology,Department of Ocean Science and Engineering,Shenzhen 518055,China;Zhejiang University,College of Ocean Engineering,Zhoushan 310058,China)

机构地区：[1]浙江省水利防灾减灾重点实验室,杭州310020 [2]浙江省水利河口研究院,杭州310020 [3]浙江广川工程咨询有限公司,杭州310020 [4]南方科技大学海洋科学与工程系,深圳5180055 [5]浙江大学海洋学院,舟山310058

出　　处：《水动力学研究与进展（A辑）》2024年第1期73-80,共8页Chinese Journal of Hydrodynamics

摘　　要：该文通过几何缩尺比水槽试验,对比波浪在光滑斜面、四脚空心块斜面和含植物四脚空心块斜面三种斜面上的爬高,研究了不同斜坡的消浪性能,测试了不同波浪周期和波高条件下波浪在斜坡面上的爬升水动力特性和最大爬高变化规律。试验结果表明:在四脚空心块中种植植物可减小波浪对护面块体的直接冲击,降低波浪爬高,对四脚空心块斜坡面的消波性能起到了一定提升作用;在不同斜坡上,无论在规则波还是不规则波条件下,最大波浪爬高与波高均表现出较好的线性关系;在光滑斜面和四脚空心块斜面上,试验所得平均糙渗系数与设计规范中建议的系数基本吻合;根据波浪爬高随波高的变化发现,光滑斜面的变化趋势最陡,块体斜面次之,植物块体斜面最平缓,反映了三种斜坡面糙渗系数的差异;固定浪高情况下,在试验考虑的周期范围内,波浪爬高在三种斜坡面上均随周期的增大而增大,但其增幅并不明显。In this paper,the wave attenuation performance on different types of sloping beaches is investigated by comparing the wave run-up on three types of beaches,namely,a smooth slope,a quadrangular hollow-blocks covered slope and a plant-blocks covered slope,through a geometric scaling wave flume test.Different wave periods and wave heights have been tested for the hydrodynamic characteristics and maximum run-up.The experimental results reveal that plants within the quadrangular hollow blocks mitigate the direct impact of waves on the hollow blocks.This intervention reduces wave run-up,enhances the wave attenuation of quadrangular hollow blocks.On all three sloping beaches,there is a nearly linear relationship between the wave run-up and wave height for both regular and irregular waves.The roughness permeability coefficients for the smooth and blocks covered beaches obtained in the tests are found to agree well with the design guideline.It is also found that the changing trend is most significant for the smooth slope,followed by the hollow-blocks slope,and the plant-blocks covered slope has the least variation,reflecting the difference in the roughness permeability coefficients of the corresponding surfaces.With a specific wave height,within the range of periods considered in the experiment,wave run-up increases slightly with the wave period for all three sloping beaches,but its increase is not significant.

关 键 词：消波性能 四脚空心块 波浪爬升 生态海堤 

分 类 号：TU476[建筑科学—结构工程]