摘要
以一艘自升式风电安装船为对象,主要对其就位过程中作用在船体上的垂向波浪剪力与弯矩进行计算分析。基于实际的船体重量分布与吃水变化,考虑大尺度桩腿与船体之间的相互影响,从就位过程中选取5个状态独立建模分析;基于三维势流理论,计算垂向波浪剪力与垂向波浪弯矩沿船长方向的分布与变化规律。分析发现,随桩腿下放,船舶迎浪一侧的垂向波浪剪力会显著增长,并且船舶非迎浪一侧的垂向波浪弯矩也会显著增长;不同浪向下的垂向波浪载荷呈现对于90°浪向的对称性,垂向波浪载荷的最大值出现在0°与180°浪向的条件下;垂向波浪剪力与弯矩的最大值总是位于船舶迎浪一侧的桩腿处。
A self-elevating wind turbine installation vessel is taken as the research object.Based on actual mass distribution and draught changes,considering the interaction between the large-scale spuds and the hull,five independent models are taken in the jacking operation.Distribution and variation law of vertical wave loads along the ship is obtained based on three-dimensional potential flow theory.It is concluded that,with the spuds lowered,vertical wave shear forces on the incident side of the hull will increase significantly,and so is the vertical wave bending moments on the other side of the hull.The vertical wave loads at different incident angles exhibit symmetry about 90 degrees.Vertical loads will reach maximum values at 0 degree or 180 degree of incident angles.The maximum values of the loads are always located at the spud on the incident side of the hull.
作者
吕文亚
陈新权
杨启
LV Wenya;CHEN Xinquan;YANG Qi(State Key Laboratory of Ocean Engineering,School of Naval Architecture,Ocean & Civil Engineering,Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Jiao Tong University Underwater Engineering Institute Co.,Ltd,Shanghai 200231,China)
出处
《中国造船》
EI
CSCD
北大核心
2019年第3期81-91,共11页
Shipbuilding of China
关键词
风电安装船
桩腿
就位过程
波浪剪力
波浪弯矩
wind turbine installation vessel
spud
jacking operation
wave shear force
wave bending moment
