大型结构物细长杆件涡激振动的抑制  

Suppression of VIV for Slender Members of Large Structure

作　　者：冯加伟 梁思颖 李天斌 FENG Jiawei;LIANG Siying;LI Tianbin(Zhanjiang Branch,CNOOC(China)Co.,Ltd.,Zhanjiang 524000,Guangdong,China)

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524000

出　　处：《中国海洋平台》2021年第6期41-44,共4页China offshore Platform

摘　　要：以文昌9-2/9-3CEP导管架为研究对象,用参数评估法对该导管架在建造、运输、在位工况下杆件的涡激振动(Vortex-Induced Vibration,VIV)进行校核,对VIV产生的原理和抑制方法进行研究。结果表明,可从改变结构自身动力特性和改善结构外部流场两个方向对杆件VIV进行抑制,安装狗骨头防振锤可有效增大结构的稳定性因数,抑制结构VIV。Taken WC9-2/9-3CEP jacket as the research object,the parameter evaluation method is adopted to calculate the Vortex-Induced Vibration(VIV)of the slender members which are used to make the jacket under the condition of constructing,transportation and in service.The principle of VIV and suppression method are studied.The VIV could be inhibited by the change of the dynamic characters of the structure and improvement of the external flow field structure.Installation of dog bone damper can effectively increase the stability factor of the structure and suppress the VIV of the structure.

关 键 词：细长杆件 导管架 涡激振动 疲劳 

分 类 号：P752[天文地球—海洋科学]