考虑大变形的深水立管涡激振动非线性分析方法  

A non-linear analysis method for vortex-induced vibration of deepwater risers with large deflection

作　　者：吴学敏[1,2] 滕文刚 王辉 WU Xuemin;TENG Wengang;WANG Hui(Shandong Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China;Architectural and Civil Engineering Institute,Qingdao Agricultural University,Qingdao 266109,China;CNPC East China Design Institute Company Limited,Qingdao 266000,China)

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,山东青岛266100 [2]青岛农业大学建筑工程学院,山东青岛266109 [3]中石油华东设计有限公司,山东青岛266000

出　　处：《中国石油大学学报（自然科学版）》2019年第6期59-66,共8页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(51179179,51079136)

摘　　要：在以往研究成果的基础上,提出考虑大变形的深水立管涡激与参激耦合振动的力学模型,并开发相应的计算程序。在验证新模型计算程序可靠性的基础上,以服役于1500 m水深的深水顶张式立管为算例,对其涡激振动的动力特性、涡激振动的响应特征以及涡激参数和环境荷载参数对立管振动响应的影响进行研究。结果表明:提出的分析方法能够很好地预测深水立管涡激振动的特征,深水立管的涡激振动响应受顶端平台激扰的影响,其响应特征是环境荷载、立管结构参数、顶部平台垂荡运动的函数。A new non-linear analysis method was proposed in this work to predict the vortex-induced vibration(VIV)response of deepwater riser,in which large deformation of risers was considered,and accordingly a program for the solution of the model was designed.In this paper,the VIV response of deepwater top tensioned riser operated in a water depth of 1500 m was investigated as a case study.The new method can be used to predict the VIV characters of deepwater risers,and the results indicate that the effect of the heave of a floating platform in VIV response of deepwater risers is strongly dependent on the environmental load,riser parameters,the amplitude and frequency of the heave.

关 键 词：深水立管 大变形 参数激扰 涡激振动 几何非线性 动力分析 

分 类 号：TE53[石油与天然气工程—油气田开发工程]