基于ALE方法分析拖网作业对海底管道影响  

Performance of Interference between Submarine Pipeline and Trawling Based on ALE Method

作　　者：叶彬彬[1] 余建星[1] 赵羿羽[1] 曾华章 张欣[1] 孟庆龙[1] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《石油矿场机械》2015年第2期5-9,共5页Oil Field Equipment

基　　金：国家重点基础研究发展计划资助(2014CB046800);国家自然科学基金(51239008)资助项目;国家自然科学基金创新研究群体科学基金(513201065)资助项目;"海洋工程作业安全模拟系统及工程应用研究(首期)"项目资助

摘　　要：在拖网板的海底拖网作业中,可能会对海底管道造成破坏。在ANSYS LS-DYNA中建立拖网板、管道、水域、曳纲的拖扯模型,利用ALE方法考虑海底水域与拖网板的耦合作用,得到管道在拖扯过程中所受到的载荷,并与DNV-RP-F111规范中推荐计算公式相比较。研究表明:在拖网作业中,海底管道悬跨高度对管道的损伤影响明显,而碰撞角度的影响可忽略不计。因此,在工程实际中应尽量避免管道出现自由悬跨段。During the pull over of the trawling of trawl boards,the pipelines may be damaged.It was based on the finite element software ANSYS LS-DYNA to module trawl board,pipeline,deep sea and warp line.The ALE(Arbitrary Lagrange and Euler)method was used to module the coupling of deep sea and trawl board and compute the maximum pull over loads on the pipe.Then the conclusion by comparing the results from ANSYS LS-DYNA with DNV-RP-F111 could be made.Based on the result of this study,it is concluded that the height of the free span has a significant influence on the damage of pipeline,while the angle of impact has little to do with pipeline's damage.Therefore,it is important to avoid the free span in the engineering practice.

关 键 词：海底管道 拖网作业 影响 分析 

分 类 号：TE952[石油与天然气工程—石油机械设备]