摘要
为解决海洋工程水池横向跨度不足的问题,对悬链线式系泊、立管系统进行等效截断设计,根据静态特性相似准则提出3种系泊线截断方案.方案1仅截断底部系泊线,方案2仅截断中间部分系泊线,均适合于横向跨度相对较大的情况.当跨度相对较小时,采用方案3,对底部和中间部分系泊线按一定比例都进行截断.而立管成分单一,直接进行截断设计即可.提出各方案的截断设计步骤,以及系泊线、立管的特性参数与自身截断因子之间的关系式.并针对一作业水深914 m的内转塔式FPSO系泊、立管系统进行截断设计和时域耦合分析,截断前后系统静态特性、平台总体响应和系泊线受力都吻合良好,并与已有全水深试验结果一致,证明了等效截断设计的合理性和正确性.
Truncation design for catenary mooring and riser system was carried out to solve the problem that the horizontal span of offshore basin was not enough for many model tests.According to the similitude of static characteristics between truncated and un-truncated systems,three methods were proposed to truncate the mooring lines.When the basin horizontal span was relatively large,only the bottom lines were truncated in method 1 and only the middle lines were truncated in method 2.When the basin horizontal span was small,both the bottom and middle lines were truncated in proportion in method 3.Since each riser was made up of one type of material,it can be truncated directly.The truncation procedures and the relations between parameters of mooring line and riser and truncation factors were determined.Truncation design for the mooring and riser system of an internal turret FPSO working in 914 m water depth and coupled analysis in time domain were performed.The results of static characteristics and global response and mooring forces were found to agree well with those of the un-truncated mooring system and available past model test results,which proved that the truncation design was reasonable and acceptable.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2010年第12期1565-1572,共8页
Journal of Harbin Engineering University
基金
"111创新引智计划"资助项目(B07019)
教育部博士点科研基金资助项目(20070217071)
中央高校基本科研业务专项资金资助项目(HCEUCF100115)
关键词
悬链线式系泊系统
等效截断
静态特性相似
内转塔式FPSO
catenary mooring system
equivalent truncation
similitude of static characteristics
internal turret FPSO
