不规则波作用下的泊位长周期波浪试验研究
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摘要
基于港口波浪整体物理模型试验并将泊位水域的波浪进行长短波分离,对不规则波作用下的泊位水域长周期波高的分布规律进行研究。结果表明:旧防波堤的反射对泊位处的长周期波高影响较大,其反射性能越强,泊位受长波危害越严重,在进行港口规划建设过程中可以通过减少港域原有建筑物的反射性能来减小港内长波;单向不规则波在泊位处的长波波高明显大于多向不规则波,在港口前期建设规划时用单向波来考虑长周期波浪对港内泊稳的影响更偏安全;泊位处的长周期波高随着入射波高、周期的增大而增大且波向的改变对港内的长波有一定的影响,但只当波向变化较大时,长波波高随波向的变化规律才明显。
Based on the overall physical model test of harbor and the long-wave separation of the waves in the berth water, the distribution of long-period wave height in the berth water under irregular waves was studied. The results show that: the reflection of the existing breakwater has a great influence on the long-period wave height, the berth is more serious damaged by the long-period wave with the reflection increase of the breakwater. In the process of harbor planning and construction, the reflection of the original buildings in the harbor area can be reduced to reduce long-period waves. The long-period wave height of the unidirectional irregular wave at the berth is obviously larger than that of the multi-directional irregular wave. The unidirectional wave should be used in the preconstruction planning of the harbor when the effect of the long-period wave is considered. Besides, the long-period wave height at the berth increases with the increase of the incident wave height and the period, and the change of the wave direction has a certain influence on it, but the variation of the long-period wave height with the wave direction obvious when the wave direction changes greatly.
Based on the overall physical model test of harbor and the long-wave separation of the waves in the berth water, the distribution of long-period wave height in the berth water under irregular waves was studied. The results show that: the reflection of the existing breakwater has a great influence on the long-period wave height, the berth is more serious damaged by the long-period wave with the reflection increase of the breakwater. In the process of harbor planning and construction, the reflection of the original buildings in the harbor area can be reduced to reduce long-period waves. The long-period wave height of the unidirectional irregular wave at the berth is obviously larger than that of the multi-directional irregular wave. The unidirectional wave should be used in the preconstruction planning of the harbor when the effect of the long-period wave is considered. Besides, the long-period wave height at the berth increases with the increase of the incident wave height and the period, and the change of the wave direction has a certain influence on it, but the variation of the long-period wave height with the wave direction obvious when the wave direction changes greatly.
引文
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[13]吴月勇,陈国平,严士常,等.不规则波作用下的港域波浪条件试验研究[J].水运工程,2017(9):94-98,107.WU Y Y,CHEN G P,YAN S C,et al.Experimental Study on Wave Conditions in Harbor Area under Irregular Wave [J].Port & Waterway Engineering,2017(9):94-98,107.
[2]顾家龙.港口水域共振问题的研究[J].水运工程,1984(12):1-10.GU J L.Research on Resonance of Port Waters [J].Port & Waterway Engineering,1984(12):1-10.
[3]Edgar P D,Peter S.New Tema Harbour Wave Study Tasks[R].Denmark:DHI,2016.
[4]杨宪章.长周期波的特性及对系泊船舶动态特性的影响[J].港口工程,1989(6):37-43.YANG X Z.Characteristics of long-period waves and their effects on the dynamic characteristics of moored ships [J].Port engineering,1989(6):37-43.
[5]史宪莹.双峰谱和长周期波浪对系泊船舶作用研究[D].大连:大连理工大学,2013.
[6]张志,孔友南,程培军.长周期波作用下防波堤透浪对港内系泊稳定影响分析[J].水道港口,2017,38(6):561-566.ZHANG Z,KONG Y N,CHENG P J.Analysis of influence of long-period transmitted wave through breakwater on mooring stability in the harbor [J].Journal of Waterway and Harbor,2017,38(6):561-566.
[7]季小强.掩护水域波高计算及长波分析[D].南京:河海大学,2007.
[8]冯丽.低频波浪在港口口门的传播变形研究[D].大连:大连理工大学,2013.
[9]马小舟.近岸低频波浪的Boussinesq模拟 [D].大连:大连理工大学,2006.
[10]肖明明.长周期波对港口工程设计波要素影响的数值模拟试验研究[D].大连:大连理工大学,2015.
[11]李绍武,李博文,柳叶,等.浅滩影响下的近岸低频波浪研究[J].水道港口,2018,39(6):643-651.LI S W,LI B W,LIU Y,et al.Study on infragravity waves over a nearshore shoal [J].Journal of Waterway and Harbor,2018,39(6):643-651.
[12]吴月勇,陈国平,严士常,等.港域波浪联合绕射、反射特性试验研究[J].水道港口,2017,38(4):330-336.WU Y Y,CHEN G P,YAN S C,et al.Experimental Study on Combined Diffraction-Reflection Characteristics of Harbor Wave [J].Journal of Waterway and Harbor,2017,38(4):330-336.
[13]吴月勇,陈国平,严士常,等.不规则波作用下的港域波浪条件试验研究[J].水运工程,2017(9):94-98,107.WU Y Y,CHEN G P,YAN S C,et al.Experimental Study on Wave Conditions in Harbor Area under Irregular Wave [J].Port & Waterway Engineering,2017(9):94-98,107.
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