深水多跨海底悬空管道的疲劳分析  

Fatigue Analysis of Deepwater Multi-Span Pipeline

作　　者：余志兵[1] 孙国民[1] 戚晓明[1] 高嵩[1] YU Zhibing;SUN Guomin;QI Xiaoming;GAO Song(Offshore Oil Engineering Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]海洋石油工程股份有限公司,天津300452

出　　处：《中国海洋平台》2021年第3期58-61,共4页China offshore Platform

摘　　要：介绍基于疲劳分析准则的多跨海管自由悬跨评估方法,采用有限元分析软件Abaqus,结合管-土相互作用参数,建立多跨海管数值计算模型,提出悬空管道模态分析方法,并基于Palmgren-Miner线性损伤累积理论及采用S-N曲线,给出管道疲劳寿命的计算过程。通过工程实例,计算获得多跨海管的自振频率及应力幅值,完成多跨海管的疲劳寿命计算与分析,为工程设计起到一定的指导作用。The evaluation method of the free span of multi-span pipeline based on fatigue analysis criterion is introduced.The numerical calculation model of the multi-span pipeline is established by finite element analysis software Abaqus and soil-pipe interaction parameters.The simulation method of modal analysis of the suspended pipeline is proposed.Based on Palmgren-Miner linear damage accumulation theory and S-N curve,the calculation process of the pipeline fatigue life is given.Through an engineering example,the natural vibration frequency and stress amplitude of the multi-span pipelines are calculated.The fatigue life calculation and analysis of the multi-span pipelines are completed,which can play a guiding role in engineering design.

关 键 词：多跨海管 涡激振动 模态响应 疲劳分析 

分 类 号：TE973[石油与天然气工程—石油机械设备]