立管对深水半潜式生产平台定位性能影响研究  

Study on effect of riser system on positioning performance at deepwater semi-submersible production platform

作　　者：单铁兵[1] 潘方豪[1] 王颢然 SHAN Tiebing;PAN Fanghao;WANG Haoran(Marine Design&Research Institute of China,Shanghai 200011,China)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011

出　　处：《海洋工程》2018年第2期9-18,共10页The Ocean Engineering

基　　金：工业与信息化部高技术船舶科研项目"深海半潜式生产平台总体设计关键技术研究";高技术船舶科研项目资助(K7590)

摘　　要：基于三维频域势流理论,计算船体的水动力参数;采用动态耦合方法分析了深海半潜式生产平台各系统之间的相互作用特征,研究了立管系统对锚泊系统定位能力的影响。计算结果表明,立管系统在一定程度上增加了整个系统的刚度,其所受的附加质量和阻尼可降低平台的低频响应,从而降低平台的偏移和系泊缆的张力;海流将增大立管上的拖曳力,使平台偏移更远,锚索上的张力更大;立管系统对锚泊系统定位性能的最终影响需综合考虑多种因素的叠加。对目标平台而言,由于服役海域的流速较大,对立管的拖曳作用较为明显。因此,为确保平台的安全性,当服役海域流速较大时,带有多立管的平台,其锚泊系统的设计应考虑立管的影响。The research object of this paper is the total system of deepwater semi-submersible production platform.The hydrodynamicparameters of platform are calculated based on three-dimensional frequency domain theory.The interaction effects of each system are analyzed by dynamic coupling method.The effects on the positioning ability of mooring system are also investigated.Calculated results show that the riser system will increase the stiffness of the total system to some extent.The added mass and damping from the riser system will decrease the low-frequency response,where the offset of platfomi and tension of mooring lines is reduced.On the other hand,current will increase the drag force on risers so as to make the platform move further and the tension of mooring lines larger.The final effect of the riser system on the positioning ability of the mooring system is considered as the superposition of all factors.In terms of target platform,the drag force on risers is significant due to the large current in the specific environment.Therefore,as current is large,the effect of multi-riser system toward mooring system design should be considered to ensure the safety of the platform.

关 键 词：半潜式生产平台 刚度 锚泊系统 立管系统 动态耦合方法 

分 类 号：U661[交通运输工程—船舶及航道工程]