摘要
浮式防波堤在港口海岸工程、近海工程、海洋工程和水产养殖等诸多领域有广阔的应用前景。与单浮箱式浮式防波堤相比,多浮箱式浮式防波堤可提高其消浪性能。对双浮箱式浮式防波堤进行了二维波浪物理模型试验,分析了浮箱宽度、前后浮箱连接方式、前后浮箱间距以及浮箱入水深度等因素对浮式防波堤消浪性能的影响。研究结果表明:对于单浮箱式浮式防波堤,试验范围内浮箱宽度增大一倍后消浪效果改善并不相对明显;前后浮箱刚性连接的双浮箱式浮堤的波浪透射系数均小于前后浮箱自由的双浮箱式浮堤和相同浮箱宽度的单浮箱式浮堤,浮堤消浪性能提高;由于前后浮箱相对间距太大时前后浮箱的相互作用减弱,浮堤的波浪反射系数变小,而不同前后浮箱相对间距的波能损耗系数整体上差别较小,双浮箱式浮堤的波浪透射系数整体上随着前后浮箱相对间距D/2B的增大先减小然后变大,在相对间距D/2B为1.0~1.5时双浮箱式浮堤的波浪透射系数相比最小;不同波高和波浪周期下,浮堤的波浪透射系数均随着浮箱相对入水深度的增大而减小。
Floating breakwater has broad application prospects in many areas, e. g. harbor and coastal engineering, offshore engineering, ocean engineering and aquaculture. Compared with the traditional single-pontoon floating breakwater, the multi-pontoon floating breakwater can improve the wave attenuation performance. In this research, the twin-pontoon floating breakwater is studied in the 2D model tests, to analyze the influence of pontoon width, connecting types, relative space and relative draft on the wave attenuation performance. The study results show that for the single-pontoon floating breakwater, the increased one time pontoon width does not improve the wave attenuation performance significantly. Comparison of the twin-pontoon floating breakwater with free pontoons and the single-pontoon floating breakwater with the same pontoon width shows that the wave transmission coefficients of the twin-pontoon floating breakwater with pontoons rigidly connected are all smaller, indicating that the twin-pontoon floating breakwater with free pontoons is improved. Due to the fact that the interaction between the twin pontoons becomes smaller when the relative space between them is too large with the reduced wave reflection coefficient, and the difference among the wave energy dissipation coefficients for different relative spaces is relatively small, the wave transmission coefficients of the twin-pontoon floating breakwater first decrease and then increase with the relative space increasing, and the wave transmission coefficients are the smallest when the relative space D/2B is in the range of 1.0 to 1.5. Under different wave conditions, the wave transmission coefficients all decrease with the relative draft increasing.
出处
《海洋工程》
CSCD
北大核心
2018年第1期47-54,共8页
The Ocean Engineering
基金
国家重点研发计划"海洋环境安全保障"重点专项(2016YFC1402000)
交通运输部应用基础研究项目(2014329746340)
关键词
双浮箱
浮箱宽度
连接方式
相对间距
相对入水深度
消浪性能
浮式防堤波
twin-pontoon floating breakwater
pontoon width
connecting types
relative space
relative draft
wave attenuation performance
floating breakwater
