悬跨海底管道安全评估和风险分级  

Safety Assessment and Risk Classes of Free Span Submarine Pipelines

作　　者：王巍巍[1] 

机构地区：[1]海洋石油工程股份有限公司,天津300451

出　　处：《船海工程》2017年第5期115-118,共4页Ship & Ocean Engineering

基　　金：中国海洋石油总公司科技项目(CNOOCKJ 125 ZDXM 05 GC 00 GC 2014-02)

摘　　要：为确定不同程度悬跨海底管道的安全性,以避免涡激共振为控制条件对不同振动方向和不同边界条件下海底管道悬跨临界长度计算方法进行分析,发现悬跨海底管道的安全长度与约化速度和边界条件具有正相关性;提出以不同条件下得出的临界悬跨长度值作为分级依据的悬跨海底管道风险分级方法,案例分析结果表明,该方法可识别出亟需治理的悬跨段,使有限的资源得到最优的分配。In order to identify the safety of submarine pipeline with different free span lengths,and avoid the vortex induced vibration,the critical free span calculation method for different vibration directions and different boundary conditions was analyzed. It was found that the free span safety length is positively related to reduced velocity and boundary condition. A free span pipeline risk classification method based on the critical free span lengths with different conditions was proposed and applied in a case,the results showed that this method can identify the most dangerous free spans,and optimally distributing the limited resources.

关 键 词：悬跨 海底管道 风险分级 临界长度 约化速度 涡激共振 

分 类 号：P756.2[天文地球—海洋科学]