含初始水平不直度海底双层管道侧向屈曲参数分析
Parametric Analysis for Lateral Buckling of Subsea Pipe-in-Pipe System with Initial Horizontal Out-of-Straightness
余志兵 1何杨 1黄卫国 2高嵩 1赵党1
作者信息
- 1. 海洋石油工程股份有限公司,天津 300452
- 2. 中海石油(中国)有限公司天津分公司,天津 300452
- 折叠
摘要
建立平坦海床上不埋设海底双层管道的非线性数值计算模型,采用有限元法分析初始水平不直度和管-土相互作用参数对海底双层管道侧向屈曲的影响.结果表明:管道初始缺陷幅值和波长越大,侧向位移越大,管道屈曲变形更集中;当缺陷波长和缺陷幅值恒定时,若增大土壤摩擦因数,管道屈曲段长度随之缩短.研究结果对海底双层管道的设计和工程建设具有指导意义.
Abstract
A nonlinear numerical analysis model for unburied subsea pipe-in-pipe system on a flat seabed is established.The finite element method is used to analyze the effects of initial horizontal out-of-straightness and parameters for pipe soil interaction on the lateral buckling of the subsea pipe-in-pipe system.The results indicate that:the larger the initial defect amplitude and wavelength of the pipeline,the greater the lateral displacement,and the more concentrated the buckling deformation of the pipe-in-pipe system;when the wavelength and amplitude of imperfection is constant,if the soil friction factor is increased,the length of the buckling segment of the pipe-in-pipe system will be shortened.The research is of a guiding significance for the design and engineering development of the subsea pipe-in-pipe system.
关键词
海底双层管道/不直度/侧向屈曲/非线性/参数分析Key words
subsea pipe-in-pipe system/out-of-straightness/lateral buckling/nonlinear/parametric analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据