内转塔式FPSO截断技术及其总体响应  

Truncation Method of Internal Turret FPSO and Its Global Response

作　　者：王宏伟[1] 罗勇 孙丽萍[1] 

机构地区：[1]哈尔滨工程大学深海工程科学与技术创新引智基地,哈尔滨150001

出　　处：《天津大学学报》2010年第11期988-994,共7页Journal of Tianjin University(Science and Technology)

基　　金："111创新引智计划"资助项目(B07019);中央高校基本科研业务费专项基金资助项目(HEUCF100115);教育部博士点新教师基金资助项目(20070217071)

摘　　要：对一作业水深914 m的内转塔式FPSO平台系泊及立管系统进行等效水深截断设计,以解决海洋工程模型试验水池尺度有限的问题.调整系泊线及立管的长度、轴向刚度和单位长度质量,保证其悬链线形状以及静态特性与原系统一致.截断因子较大时,只对系泊线中间部分等效截断,截断因子较小时,海底部分也要适当截断,并分别推导出相应计算公式.最后对整个FPSO系统进行时域耦合分析,比较发现截断后系泊系统静态特性、平台总体响应和系泊线受力都与全水深情况和已有模型试验结果吻合良好.表明截断方法是合理可行的,能保证截断前后平台性能一致.To solve difficulties of limited basin depth in model tests of deepwater platforms,suitable methods to truncate the mooring and riser system have been investigated using a study case of an internal turret FPSO in 914 m water.To ensure catenary shape of mooring line and riser and static characteristics consistent with original mooring system,the length,axial stiffness and mass of mooring line and riser were coordinated.If truncation factor was large,only the middle part of mooring lines need to be truncated,while if the factor was small,bottom part lines also need to be truncated,and responding formulas were derived respectively.At last,coupled analysis was carried out in time domain.After comparisons,it was found that both static characteristics and global response and mooring line tensions of truncation systems agree well with the prototype water depth results and model test results.The truncation methods are proved to be practical and reliable,and FPSO performance is not changed.

关 键 词：内转塔式FPSO 系泊系统 截断 时域耦合分析 

分 类 号：U674.38[交通运输工程—船舶及航道工程]