温度应力下海底管线水平屈曲分析  

Lateral bucking analysis of submarine pipeline under thermal stress

作　　者：刘润[1] 郭林坪[1] 刘文彬[1] 徐余[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津市建筑设计院,天津300074

出　　处：《中国科技论文在线》2011年第5期368-373,共6页

基　　金：国家自然科学基金资助项目(40776055);上海交通大学海洋工程国家重点实验室研究基金资助项目(1002)

摘　　要：温度应力下海底管线的屈曲大变形是管线设计中所要考虑的关键问题之一。以某实际工程为背景,应用理想平直管线发生水平向屈曲的解析解,分析了温差和地基土特性对管线屈曲大变形的影响。研究表明,在海底管线水平向屈曲的2种主要模式中,第2种屈曲模式对应的初始屈曲温差相对较低;地基土对管线的约束作用显著影响管线初始屈曲对应的温差。Buckling of submarine pipeline under thermal stress is one of the most important problems in pipeline design. Based on a practical engineering and employed the analytical solution of lateral buckling, effects of factors such as temperature difference and properties of foundation soil to pipeline buckling were analyzed. The analyzing results show that the second lateral buckling mode occurs at a lower temperature difference and interaction between the subsoil and pipeline influence the pipeline thermal buckling mode obviously.

关 键 词：海底管线 水平向屈曲 解析解 温差 地基土摩阻力 

分 类 号：P756.2[天文地球—海洋科学]