Study on numerical simulation of scouring protection by sand bags around pile of jack-up platform
WANG Kai
HAN Xinyu
DONG Sheng
Abstract：The local scour characteristics of pile foundation and the protective effect of sandbag throwing are studied when the pile foundations of jack-up platform are shallow in mud.By simplifying the wave-flow interaction,Flow-3D numerical simulation software was used to obtain the scouring condition of pile boot when it was immersed in mud at 1.5 m and 3.0 m.Numerical simulation results show that lo-cal scour is mainly distributed on both sides of the pile boot,and the silt is formed behind the pile boot,and the scour depth can reach 3.5 m and 2.95 m respectively.Local scour affects the seabed bearing layer near the pile boots and reduces the stability of the jack-up platform,which requires scour protec-tion.The sand bag protection was used to protect the pile foundation of jack-up platform from scour,and Flow-3D numerical simulation was used to obtain the scour results under sand bag protection when the pile boot was immersed in mud at 1.5 m and 3.0 m.It was considered that the scour protection effect of sand bag was better.
Keywords：pile foundationlocal scournumerical simulationsand bag protection
Publication Date：2025-06-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 37-43 )