强台风作用下海洋平台井架抗风性能  

Wind Resistance Performance of Offshore Platform Derricks Under Strong Typhoon Action

作　　者：刘金梅[1] 林聿维 LIU Jinmei;LIN Yuwei(Mechanical Science and Engineering College,Northeast Petroleum University,Daqing 163318,Heilongjiang,China)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318

出　　处：《中国海洋平台》2024年第5期66-70,108,共6页China offshore Platform

摘　　要：为研究在强台风作用下海洋平台井架的抗风性能,提出静力分析与瞬态动力学分析相结合的方法,综合考虑背向风、侧向风和45°向风等3种风向,利用Davenport功率谱,采取谐波叠加法和快速傅里叶技术模拟脉动风风场,用MATLAB编程得到相应的风速时程曲线,转化为风载加载到模型上,得出节点最大位移、轴向应力和弯矩的时程曲线。研究发现,45°向风为井架较不利风向,井架底部和根部受载较严重,并且在动力学分析中45°向风的位移和应力等结果都为静力分析的近3倍,因此在未来的生产实践中推荐使用瞬态分析方法。In order to study the wind resistance performance of offshore platform derricks under strong typhoon,a method combining static analysis and transient dynamic analysis is proposed,which comprehensively considers three wind directions:back wind,lateral wind,and 45°wind.The Davenport power spectrum is used,and the harmonic superposition method and fast Fourier technology are used to simulate the pulsating wind field.The corresponding wind speed time history curve is obtained through MATLAB programming,which is converted into wind load and loaded onto the model.The time history curves of the maximal displacement,axial stress and bending moment of the nodes are obtained.It is found that the 45°wind direction is the more unfavorable wind direction for the derricks,and the bottom and root of the derricks are heavily loaded.In dynamic analysis,the displacement and stress results of the 45°wind direction are nearly three times that of the static analysis.Therefore,transient analysis method is recommended for future production practice.

关 键 词：海洋平台井架 抗风性能 静力分析 脉动风 瞬态动力学分析 

分 类 号：TE95[石油与天然气工程—石油机械设备]