顶张式立管液压气动式张紧器的模拟方法  

Modeling Approach of Hydro-pneumatic Tensioner for Top Tensioned Riser

作　　者：陈柏全[1,2] 余杨 余建星[1,2] 高静坤[3] 刘浩[3] CHEN Baiquan;YU Yang;YU Jianxing;GAO Jingkun;LIU Hao(State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China;CoUaborative Innovation Center for Advanced Ship and Deep-sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China;CNOOC Deepwater Development Ltd., Guangdong Shenzhen 518000, China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350 [2]上海交通大学高新船舶与深海开发装备协同创新中心,上海200240 [3]中海石油深海开发有限公司,广东深圳518000

出　　处：《船舶工程》2018年第1期27-31,80,共6页Ship Engineering

基　　金：国家工信部高技术船舶科研项目"500米水深油田生产装备TLP自主研发"(CCL2016SZGF0003);国家重点基础研究发展计划(973计划)资助项目(2014CB046804);国家自然科学基金青年基金项目(51609169)

摘　　要：综合考虑液压气柱的张力-冲程非线性关系、液压气柱与立管之间的夹角以及平台-张紧器-立管之间的耦合关系,研究顶张式立管液压气动式张紧器的不同模拟分析方法。选取3种典型工况,对不同张紧器模拟方法下立管的动态响应进行仿真计算,分析比较不同模拟方法的科学性和适用性。结果表明:在顶张式立管分析过程中,张紧器的合理模拟至关重要,是否考虑液压气柱和立管之间的夹角对立管响应的影响不大;恒定集中力模型不能反映立管张力的变化规律,而且立管响应也存在较大差别,故不宜采用;线性模型可用于平台运动幅值较小的情况;非线性模型最能反映张紧器的刚度特性,且在极端载荷环境下尤为适用。The different modeling approaches of conventional hydro-pneumatic tensioner for top tensioned riser is studied, considering the nonlinear tension-stroke relationship of hydro-pneumatic cylinders, the angle between hydro-pneumatic cylinders and riser, and the platform-tensioner-riser coupling relationship. Selecting three kinds of typical conditions, the dynamic responses of the riser under different modeling approaches are investigated. The rationality and applicability of different modeling approaches are analyzed. The results show that reasonably modeling the tensioner is vital for riser analysis, while the consideration of the angle between hydro-pneumatic cylinders and riser has weak effect on the riser response result. The constant tension model is not recommended as it fails to reflect the variation of riser top tension while the riser response has large differences. The linear model is applicable when the heave of platform is relatively small. The nonlinear model is strongly recommended to capture the nonlinear characteristics of the tensioner, especially in harsher environmental conditions.

关 键 词：顶张式立管 液压气动张紧器 模拟方法 非线性模型 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]