抛石堤长周期波浪透浪作用及对码头系泊条件的影响
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摘要
长周期波浪作用于抛石堤时,部分波能透过石间孔隙,从而影响港内泊稳。结合印尼工程实例,采用波浪断面物理模型试验,对透射系数随周期、波高、波类型等因素的变化规律进行了研究。通过波浪整体系泊物理模型试验,对驳船码头和散货船码头的相应泊稳条件进行了研究。结合试验结果分析了透浪对码头系泊条件的影响。结果表明:抛石堤透射系数随波高的增大而减小,随周期的增大而增大;周期越长,船舶允许作业波高越小;长周期波浪的透浪作用对系泊影响程度大,设计时应纳入考虑。试验结果可为抛石堤后方码头设计提供参考。
When long period waves act on riprap dike,part of the waves can penetrate the pores between the rocks,thus affecting the harbor mooring stability. Based on the Indonesian project,the variation of penetration coefficient with wave period,wave height and wave type is studied by wave section physical model test. Based on the wave integral mooring physical model test,the corresponding mooring stability conditions of barge terminal and bulk cargo terminal are studied. Combined with the test results,the influence of wave penetration on the mooring conditions is analyzed. The results show that: the wave penetration coefficient of riprap dike decreases with the increase of wave height and increases with the increase of the period; the longer the period is,the smaller the wave height of the ship is allowed to operate; the wave penetration coefficient of long period waves has great effect on mooring and should be taken into account in the design. The test results can provide reference for the design of the wharf behind the riprap.
When long period waves act on riprap dike,part of the waves can penetrate the pores between the rocks,thus affecting the harbor mooring stability. Based on the Indonesian project,the variation of penetration coefficient with wave period,wave height and wave type is studied by wave section physical model test. Based on the wave integral mooring physical model test,the corresponding mooring stability conditions of barge terminal and bulk cargo terminal are studied. Combined with the test results,the influence of wave penetration on the mooring conditions is analyzed. The results show that: the wave penetration coefficient of riprap dike decreases with the increase of wave height and increases with the increase of the period; the longer the period is,the smaller the wave height of the ship is allowed to operate; the wave penetration coefficient of long period waves has great effect on mooring and should be taken into account in the design. The test results can provide reference for the design of the wharf behind the riprap.
引文
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[2]冯卫兵,王明明,崔川川.潜堤透浪系数的试验研究[J].水运工程,2012(9):1-6.
[3]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.
[4]高峰,沈文君,李焱,等.船舶系泊动力分析数值模拟计算研究[J].水道港口,2015,36(6):494-501.
[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.