海底光电复合缆受坠物撞击的损伤分析
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1.天津大学建筑工程学院水利工程仿真与安全国家重点实验室;2.天津大学建筑工程学院

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深水半潜式生产储卸油平台工程开发(工信部项目)


Damage Analysis of Submarine optical composite Cables Impacted by Dropped Objects
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School of Civil Engineering, State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University

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    摘要:

    针对海底电缆受坠物撞击后的安全性问题,基于CEL方法模拟了坠物撞击海底光电复合缆的动态过程,对比分析了刚性底质和非刚性底质下海底电缆铠装层及电缆芯的损伤情况,分析了坠物大小、速度、质量和撞击角度对海底光电复合缆的损伤影响。结果表明,刚性底质下海底电缆受到的损伤程度明显高于非刚性底质;铠装层是海底光电复合缆的主要承力构件,铠装层的损伤变形可推断出电缆芯的损伤变形;海底光电复合缆受坠物撞击的损伤程度随撞击速度和坠物质量的增大而增大;对于正方体坠物,当其撞击角度小于60°时,海底光电复合缆受坠物撞击的损伤程度随撞击角度的增大而增大。

    Abstract:

    Aiming at the safety problem of the submarine cable after being impacted by a dropped object, the process of dropped objects impacting the submarine optical composite cable was simulated based on the CEL method. The comparative damage analysis of the rigid seabed and non-rigid seabed was carried out and damage effects of the different sizes, impact speeds, masses and impact angles of the dropped object were analyzed. The results showed that the damage to submarine cables under rigid seabed was significantly higher than that of non-rigid seabed. The armor layer was the main load-bearing component of the submarine optical composite cable. The damage and deformation of the cable core could be inferred from the damage level and deformation of the armor layer by studying the strain of the armor layer and the cable core. With the mass of the dropped object or the speed of the dropped object increasing, the possibility of damage to the submarine optical composite cable increased. For cube objects, when the impac tangle was less than 60°, the impact angle increased, the possibility of damage to the submarine optical composite cable increased.

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  • 收稿日期:2021-01-20
  • 最后修改日期:2021-01-20
  • 录用日期:2021-02-04
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