海底管道拖拽后结构强度评估
Structure Strength Evaluation of Submarine Pipeline after Dragging
郝林 1胡军 1逄凯 1张少洋 1陈涛1
作者信息
- 1. 中海油安全技术服务有限公司,天津 300457
- 折叠
摘要
对某铺设为弧形的管道,根据拖拽后的实际几何形状,采用有限元方法计算管道弯矩与轴向力.经计算,弯矩为控制载荷,最大载荷位置出现在管道拐点区域.对不同偏移距离进行敏感性分析,随着上拱区域管道向下凹偏移,最大弯矩由60.2 kN·m增大至62.8 kN·m,随着下凹区域管道向上拱偏移,最大弯矩增大且较为明显,由64.4 kN·m增大至74.4 kN·m,增大15.5％.计算表明,在管道最大偏移区域,偏移量对管道弯矩的影响更显著.
Abstract
For a pipeline laid as an arc,the bending moment and axial force of the pipeline are calculated using finite element method based on the actual geometric shape after dragging.After calculation,the bending moment is the control load,and the maximal load position occurs in the inflection point area of the pipeline.The sensitivity analysis is conducted on different offset distances.As the pipeline in the upper arch area shifts towards the lower arch,the maximal bending moment increases from 60.2 kN·m to 62.8 kN·m.As the pipeline in the lower arch area shifts towards the upper arch,the maximal bending moment increases significantly,from 64.4 kN.m to 74.4 kN m,with an increase of 15.5％.The calculation shows that in the maximal offset area of the pipeline,the impact of the offset on the bending moment of the pipeline is more significant.
关键词
海底管道/拖拽偏移/有限元分析Key words
submarine pipeline/drag offset/finite element analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据