中国石油大学学报（自然科学版）2024，Vol.48Issue(3)：154-161,8.DOI:10.3969/j.issn.1673-5005.2024.03.017
自升式平台桩靴周围土体冲刷机制及数值模拟
Scouring mechanism and numerical simulation of seabed soil around jack-up rig spudcans
摘要
Abstract
In order to evaluate the safety after pile penetration related to the soil around the jack-up rig locally scoured by wave flow,a three-dimensional finite element model for local scour was developed utilizing numerical simulations based on the computational fluid dynamics.The flow field variations around the spudcans were accurately simulated by solving the Navier-Stokes equations.Based on actual geological site parameters and sea conditions,an engineering analysis method ap-plicable to the local scour problem of the soil around the spudcans was developed.The numerical results were compared with the experimental results.The local scouring effects on soil around the spudcans of the jack-up rig were discussed at different penetration depths and operational cycles.The results show that the penetration depth of the jack-up rig spudcans under the joint action of wave current and sea current has a significant effect on the local scour depth of the soil around the spudcans.Shallower penetration depth makes the spudcans more susceptible to local scour.Targeted scour protection measures were de-veloped to reduce the local scour depth around the spudcans according to varying penetration conditions,which can effectively reduce the operational risks.关键词
数值模拟/自升式平台/插桩/冲刷机制Key words
numerical simulation/jack-up rig/spudcan penetration/scouring mechanism分类
能源科技引用本文复制引用
殷启帅,龙洋,马永奇,薛倩玲,杨进,李俐..自升式平台桩靴周围土体冲刷机制及数值模拟[J].中国石油大学学报（自然科学版）,2024,48(3):154-161,8.基金项目
国家自然科学基金面上项目(52374020) （52374020）
中国石油大学(北京)科研基金项目(2462021BJRC008) （北京）
