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首页> 外文期刊>Journal of ocean engineering and marine energy >Modified articulated padding for subsea cables' crossing
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Modified articulated padding for subsea cables' crossing

机译：修改后的填充为海底电缆的穿越

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With the growing demand for high-voltage submarine cables for power transmission in the gas and oil industry and the sheer density of subsea fields, subsea cables' crossing is unavoidable. However, such cables are not without risks and the deterioration of subsea cables' crossing is a common issue. In such situations, the articulated padding is usually utilized to provide vertical separation between the crossing subsea cables and the crossed assets. The articulated padding is a lightweight item usually comprised of two polyurethane half discs attached via corrosion-resistant alloy banding or bolts and installed around the crossing cables. In this paper, modified articulated padding is introduced in which the minimum thickness of the load-bearing surface of the padding was increased and the padding profile was changed from a circle to a dodecagon, allowing the most common loading to be changed from a point load to a line load. The modified articulated padding was verified using a physical testing program and finite-element numerical modeling. The physical testing program included a radial load test, an axial load test, a combined radial and axial oscillation load test, and an abrasion test. The results of these tests demonstrated that the modified articulated padding has superior resistance to axial and radial loads when compared to previously used articulated padding. It was also verified that the stress levels in both the modified and previously used articulated paddings remain within the component material limits. However, the factor of safety achieved by the modified articulated padding was more than twice that of the previously used articulated padding. Finally, several Remotely Operated Vehicle (ROV) surveys were also conducted to demonstrate the robustness of the modified articulated padding.
机译：高压海底日益增长的需求电缆输电的天然气和石油工业和水下的绝对密度字段,海底电缆的交叉是不可避免的。这样的电缆,并不是没有风险恶化的海底电缆穿越是一个常见的问题。填充通常是用来提供垂直穿越海底电缆和之间的分离交叉资产。通常由两个轻量级项目聚氨酯半盘连接通过耐蚀合金条带或螺栓在交叉电缆安装。介绍了论文修改的填充的最小厚度承载表面填充的增加并从一个圆填充概要文件被改变十二边形,让最常见的加载从一个点负载线路负荷。修改后的铰接填充了使用一个物理测试项目有限元数值模拟。测试计划包括一个径向负载测试,一个结合径向和轴向轴向负载测试振动载荷试验和磨耗试验。这些测试的结果证明了修改后的填充优越抵抗轴向和径向加载时相比以前的填充。它也是验证的压力水平修改和以前使用的填充仍在组件材料限制。修改后的铰接填充超过之前使用过的铰接的两倍填充。车辆(ROV)也进行了调查说明修改的鲁棒性的填充。

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