南海自由站立式立管动态强度及疲劳分析  

Dynamic Strength and Fatigue Analysis of Free Standing Hybrid Riser in South Sea

作　　者：孙丽萍[1] 徐莹[1] 羊卫 付森 SUN Li-ping XU Ying YANG Wei(College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China Marine Design ＆ Research Institute of China, Shanghai 200011, China)

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001 [2]中国船舶工业第七0八研究所,上海200011

出　　处：《船舶工程》2016年第10期1-5,25,共6页Ship 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”资助

摘　　要：根据设计参数建立自由站立式立管系统模型,根据南海某油田环境参数校核立管各工况下的强度结果并进行疲劳分析,探讨自由站立式立管动态强度与疲劳特性并验证是否满足规范要求。结果表明,该立管设计满足规范中的强度与疲劳要求,且疲劳性能较好;立管等效应力最大处为立管主体顶部应力节下端;最危险浪流方向为沿立管向平台方向;立管主体应力水平受平台运动影响较小,受顶部张紧力及海流大小影响较大;疲劳损伤最大处位于立管主体顶部,且涡激疲劳损伤大于浪致疲劳损伤。According to the design parameters, a FSHR（free standing hybrid riser） finite element model is established. The strength results under different conditions are checked according to environmental parameters of an oil field in South Sea and the fatigue analysis is done. It discusses if the strength and fatigue characteristics meet the design requirements of the rules. The calculation results show that the riser satisfies the strength and fatigue requirements of the rules, and the fatigue performance is good. The maximum equivalent stress occurs at the bottom of the upper stress joint. The most dangerous wave and current direction is from the riser to the platform, and the stress level is little affected by platform motion and greatly by top tension and current. The maximum fatigue damage occurs at the riser top, and the VIV fatigue damage is more serious than the wave-induced fatigue damage.

关 键 词：自由站立式立管 强度分析 浪致疲劳 涡激疲劳 

分 类 号：TE973[石油与天然气工程—石油机械设备]