Summary
In submarine cable protection engineering, the widely employed rock berms can alter the natural marine microtopography and hydrodynamic conditions, inducing seabed scouring that leads to the failure of submarine cable protection and the formation of exposed and suspended cables. Suspended submarine cables are susceptible to vortex-induced vibrations (VIV) under the action of ocean currents, which in turn cause fatigue damage to the structural layers of the cables. Addressing the issues of large-scale suspension and internal lead sheath damage observed at the protected end of a rock berm in a practical submarine cable project, this paper investigates the influence and evolutionary patterns of rock berms on seabed scouring development, analyzes the periodic VIV characteristics of suspended submarine cables under ocean current action, and predicts the fatigue failure process of the lead alloy sheaths of submarine cables subjected to long-term dynamic loads..
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B1_11793_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | China, People's Republic of |
| Study committees | |
| File size | 2 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
FENG Bin - CSG Electric Power Research Institute Co., Ltd. China; FU Mingli - CSG Electric Power Research Institute Co., Ltd. China; JIA Lei - CSG Electric Power Research Institute Co., Ltd. China; FAN Lingmeng - China Southern Power Grid Co., LTD China; LI Yanfei - China Southern Power Grid Co., LTD China; LU Qingzhen - Dalian University of Technology China; YAN Jun - CSG Electric Power Research Institute Co., Ltd. China; HOU Shuai - China Southern Power Grid Co., LTD China
Keywords
Submarine cables, Free span, Scouring, Vortex-induced vibration, Fatigue life
