基于管土耦合的海底管跨涡激疲劳分析程序  

VIV Fatigue Analysis Program for Submarine Pipeline Span Based on Pipe-soil Coupling Model

作　　者：谢丽婉[1] 陈国明[1] 鞠少栋[1] 许亮斌 

机构地区：[1]中国石油大学海洋油气装备与安全技术研究中心,山东东营257061 [2]中海油研究总院,北京100027

出　　处：《石油矿场机械》2011年第2期1-4,共4页Oil Field Equipment

基　　金：高等学校博士学科点专项科研基金项目(20060425506);中央高校基本科研业务费专项资金项目(09CX05008A)

摘　　要：由于海流冲刷,海底管线在服役期间会在某些管段形成管跨,管跨的涡激振动是引发海底管线疲劳失效的主要因素之一。基于Visual Basic环境开发海底管跨涡激疲劳分析程序,利用所封装的ANSYS软件建立管土耦合非线性管跨有限元模型,依据Miner线性累积损伤理论,采用S-N曲线法计算管跨在海流作用下的疲劳损伤,并与SHEAR7软件的计算结果进行对比验证,开发的疲劳分析程序具有较高的精度和工程应用价值。Because of the ocean current scour,pipeline spans appear in some pipe sections during the service period,the vortex-induced vibration of submarine pipeline span is one of the main factors resulting in fatigue.By using Visual Basic tools,VIV fatigue analysis program for submarine pipeline span was developed by integrating with ANSYS system,based on pipe-soil coupling nonlinear model.The fatigue damage of a free spanning pipeline was calculated by applying Miner linear cumulative damage formula and S-N curve method.Comparing with simulation results of SHEAR7,the simulation module has enough precision and practical value.

关 键 词：管跨 涡激振动 管土耦合 疲劳分析 

分 类 号：TE88[石油与天然气工程—油气储运工程]