Study on the Impact Damage of Submarine Pipelines by Anchor under Emergency Anchorage

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Sun, Qian^1 ; Liu, Jianmin^1

School of Marine Engineering, Jimei University, Xiamen, China^1

关键词: ABAQUS software;    Collision damage;    Deformation regularities;    Impact damages;    Pipe wall thickness;    Pipe walls;    Slenderness ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/2/022078/pdf
DOI  :  10.1088/1757-899X/452/2/022078

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this article finite element modeling of anchor and submarine pipeline under the condition of emergency anchorage were built up by using ABAQUS software, then numerical simulations were made. Security of the pipeline was checked according to the ratio of the dent depth and pipe wall diameter after that. At the same time the relationships between towing anchor collision damage and pipe wall thickness as well as pipeline slenderness ratio were got by horizontal comparison. It was concluded that the damage degree of the towing anchor is reduced with the increase of thickness and slenderness ratio of the pipelines. Then vertical impact between dropping anchor and pipeline was analyzed by ABAQUS also. Finally, values of DNV specification rules were compared with the numerical simulation results. The research conclusions have some practical significance for the analysis of deformation regularity of the submarine pipelines damaged by the anchor, the design and repair of the pipelines.