浮拖法铺设海底管道接头处破坏机理研究  

Study on Failure Mechanism for Welded Joints of Pipeline Laying by Surface Tow Method

作　　者：成红武[1] 李昕[1] 周晶[1] 

机构地区：[1]大连理工大学,大连116024

出　　处：《中国海洋平台》2011年第5期38-43,共6页China offshore Platform

基　　金：中央高校基本科研业务费专项(DUT10ZD201)资助项目

摘　　要：基于浮拖法铺设海底管道接头处全寿命期受力条件,开展有限元数值仿真模拟。给出了存在焊接错边缺陷情况下管道接头处典型的局部屈曲变形模式,分析了循环加载对临界屈曲荷载的影响,并对多种因素进行了参数分析。Based on finite element method, a numerical procedure to simulate the whole life cycle loading history for welded joints of submarine pipeline laying by surface tow method is proposed. The typical local buckling modes of the pipeline joint with weld imperfections are calculated and studied. The effects of cyclic loading on the critical buckling load are analyzed. A parametric study is performed at last.

关 键 词：海底管道 焊接缺陷 局部屈曲 循环荷载 参数分析 

分 类 号：P756.2[天文地球—海洋科学]