腐蚀海底管道悬跨段抗震可靠性分析  

Seismic Reliability Analysis for Suspended Section of Corroded Submarine Pipeline

作　　者：韩文海[1] 周晶[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《化工设备与管道》2014年第5期75-78,共4页Process Equipment & Piping

基　　金：973项目课题"深海柔性结构非线性流固耦合振动与破坏机理"(2011CB013702)

摘　　要：为研究腐蚀海底管道悬跨段的抗震可靠性,根据腐蚀的随机性,基于马尔科夫链理论,建立了管线腐蚀模型。提出悬跨段管道的简化计算模型,推导出其在地震作用下轴向位移和轴向应力的表达式。利用Monte Carlo方法求出了轴向位移和轴向应力反应的均值和标准差。根据建立的腐蚀海底管道失效的极限状态方程,分析了腐蚀悬跨管道在计算时间的抗震可靠性。为实际工程中对海底管道进行抗震可靠性分析提供了参考。In order to study the seismic reliability of the suspended corroded submarine pipeline,a corrosion model of submarine pipe was established based on Markov chain.The simplified computation model was derived to calculate the axial displacement and stress under the earthquake.Additionally,Monte Carlo method was used to find the mean value and standard deviation.With a given sample,the seismic reliability was analyzed for a suspended corroded submarine pipe using the ultimate failure function of this pipeline.It is hoped to provide reference in analyzing seismic reliability for the practical submarine pipeline in engineering.

关 键 词：海底管道 悬跨段 马尔科夫链 管道地震响应 抗震可靠度 

分 类 号：TQ055.81[化学工程] TH123[机械工程—机械设计及理论]