Numerical Simulation of Mechanical Properties of Submarine Cable during Moving Process
Several studies and engineering projects about lifting and moving submarine cables are referenced to study mechanical loads on submarine cables during their moving process.The marine environment at a specific area in the Bohai Sea is chosen as the research background,and a simplified equivalent model for moving a common submarine cable is established.It is shown that buoyancy bag setting schemes have a large impact on the mechanical loads on the submarine cable.Tension at the top of the submarine cable and tension of the crane and slings are greatly influenced by the wave direction.The results indicate that moving operations under transverse waves should be avoided.The best solution is to set up 6 buoyancy bags with a spacing of 20 m.Displacement of the submarine cable can be achieved by vertically lifting 0.5 m with 6 slings and the ship's active lateral movement of 2.5 m.The conclusion has a certain guiding significance to practical engineering.
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