摘要
采用时域数值模型,对横浪作用下码头前系泊船舶的运动响应进行了研究,分析了波高、周期、水深、船舶尺度及码头型式等因素对撞击速度的影响。结果表明：当波浪周期小于船舶自振周期时,撞击速度随波高的增加线性增长;波浪周期越大,撞击速度越大;船舶装载度（吃水）越小,撞击速度越大;墩式码头（无限开敞水域）中系泊船舶的撞击速度大于岸壁式码头（半无限开敞水域）;船舶撞击速度与水深的关系尚不明确。结合国内2~26万t级船舶的物理模型试验结果,运用多元回归分析,得到了一个码头前系泊船舶撞击速度的估算公式。
Motion responses of a moored ship under the action of beam seas were calculated using a time-domain numerical model.Correlations among wave height,period,water depth,ship size,wharf type and impact velocity were tested.It is shown that the impact velocity increases linearly with wave height when the wave period is less than the natural period of a ship.And it increases with the increasing wave period,while decreases with the increasing ship draft.It is higher in breasting dolphin（infinite domain） than in bulkhead wharf（semi-infinite domain）.The relationship between water depth and impact velocity remains unclear.In addition,a large number of available data were collected in physical models of 20 000~260 000 DWT ships.Based on multiple regression analysis,an approximate estimate of impact velocity of a mooring ship was presented.
出处
《水道港口》
2011年第3期161-167,共7页
Journal of Waterway and Harbor
基金
<港口工程荷载规范>(JTJ215-98)修订专题研究
关键词
横浪
系泊船舶
撞击能量
撞击速度
beam seas
moored ship
impact energy
impact velocity
