S-spar平台垂荡板数目确定及立管系泊系统耦合分析  

On Number of Heave Damping Plates of S-spar Platform and Coupling Analysis of Risers and Mooring System

作　　者：孙洁莹 张淑华[1] 陈辉 封磊 

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098

出　　处：《船海工程》2018年第1期89-93,共5页Ship & Ocean Engineering

摘　　要：考虑到目前S-spar平台垂荡板数目是参考Truss Spar平台3块垂荡板的设计,而未结合平台本身特性进行深入研究,因此基于SESAM对S-spar平台进行频域分析,确定S-spar平台采用4块垂荡板更为合适。在4块垂荡板的S-spar平台频域分析的基础上,对系泊系统及立管进行耦合分析,对比有无立管情况,发现考虑立管后平台各自由度上运动显著减小。为解决立管张力过大的问题,在立管上安装浮子,讨论浮子位置、浮子浮力对立管张力的影响,确定安装500 k N的浮子在距立管悬垂段距顶端65%处为最优方案。The number of heave damping plates in S-spar platform is more reference to 3 heave damping plates in Truss Spar platform,and is not deeply studied according to its own characteristics. Based on SESAM,the S-spar platform was analyzed in frequency domain,and the most suitable number of heave damping plates of the S-spar platform was 4. Based on the frequency domain analysis of the S-spar platform with 4 heave damping plates,the coupling analysis of the mooring system and the riser was carried out,showing that the motions of the platform could be significantly reduced after considering the riser. In order to solve the problem of excessive tension of the riser,the buoyancy block was installed,the influence of its position and its buoyancy to the tension of the riser was discussed. The installation of 500 k N of the buoyancy block at 65% of the overhanging length from the top of the riser was determined.

关 键 词：S-spar平台 垂荡板 耦合分析 张紧式系泊 立管张力 浮子 

分 类 号：U661.4[交通运输工程—船舶及航道工程]