圆筒型FPSO砰击预报模型及响应特性  

Impact Prediction Model and Response Characteristics of Cylindrical FPSO

作　　者：徐晨峰 李俊[1,2] 卢文月[1,2] 李欣 田新亮[1,2] 毛竞航[1,2] XU Chenfeng;LI Jun;LU Wenyue;LI Xin;TIAN Xinliang;MAO Jinghang(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Yazhou Bay Institute of Deepsea Sci-Tech,Shanghai Jiao Tong University,Sanya 572000,Hainan,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学三亚崖州湾深海科技研究院,海南三亚572000

出　　处：《中国海洋平台》2023年第5期12-19,66,共9页China offshore Platform

基　　金：三亚崖州湾科技城科研专项资助(编号:SCKJ-JYRC-2022-13)。

摘　　要：考虑到砰击载荷的强非线性、随机性等特点,采用模型试验方法对圆筒型浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)受到波浪砰击作用的概率模型、环境激励规律进行研究。提出基于波面升高无因次化模型的方法,将少量的千年一遇和百年一遇砰击数据进行归一化拟合,以获得圆筒型FPSO的砰击载荷特性。结果显示,平台自身的运动对砰击概率有重要影响,且砰击发生概率加速阶段与砰击点的位置没有明显关系。随着砰击点位置的升高,圆筒型FPSO砰击载荷的量级总体呈上升趋势。由于圆筒型外翻结构的特点,与垂荡周期相近的谱峰周期海况所激发的砰击概率会提升。所构建的无因次化砰击概率模型和无因次化砰击载荷分布模型可对砰击载荷和砰击概率进行预测,并且模型可为长期模拟提供基础。Considering the strong non-linearity and randomness of impact load,the probability model of impact load and the excited rule by sea environment of cylindrical Floating Production Storage and Offloading(FPSO)are studied by model test method.A method based on the dimensionless model of wave surface rise is proposed,and a small amount of impact data with 1000 a and 100 a return period are normalized and fitted to obtain the impact load characteristics of cylindrical FPSO.The results show that the motion of the platform itself is of important influence on the impact probability,and the acceleration phase of the impact probability is of no obvious relationship with the location of the impact point.With the increase of the location of impact point,the magnitude of impact load of the cylindrical FPSO tends to increase.Due to the upper overturning structure of the cylindrical FPSO,the probability of the impact stimulated by the sea state with the spectral peak period close to the heave period of the cylindrical FPSO will increase.The dimensionless impact probability model and dimensionless impact load distribution model constructed can predict the impact load and impact probability,and the model can provide a basis for long-term simulation.

关 键 词：圆筒型FPSO 波面升高 砰击概率 砰击载荷分布 无因次化 

分 类 号：U674.381[交通运输工程—船舶及航道工程]