摘要
采用两相光滑粒子流体动力学方法对海上风机单桩基础海床防冲刷进行了模拟,得到冲刷的动力过程。模拟结果显示,当水流冲击基桩时,水流受到阻碍,大部分水流绕过桩基从侧部流出,与海床接触的水流在竖直方向形成类似异重流结构,产生冲刷。为防止这种现象,基于模拟结果设计了一种防冲层,防冲刷层呈由多个正六边形的单体构成的蜂窝状,相邻的两个所述单体固定连接。防冲层为两层,在波浪、潮流冲击下能保持侧向稳定,因此能够减少基桩受到的波浪、潮流的冲刷。采用蜂窝状结构,相同面积下防冲层使用的材料更少,但防冲效果更强,更不会随着波浪、潮流的冲刷发生移动,防冲效果稳定高效。
The two-phase smooth particle hydrodynamic method was used to simulate the anti-erosion of the seabed of the monopile foundation of the offshore wind turbine,and the dynamic process of erosion was obtained.The simulation results show that when the water flow hits the foundation pile,the water flow is obstructed,most of the water flow flows out from the side around the pile foundation,and the water in contact with the seabed forms a similar heterogeneous flow structure in the vertical direction,resulting in erosion.In order to prevent this phenomenon,based on the simulation results,an anti-impact layer is designed,the anti-erosion layer is a honeycomb composed of a plurality of regular hexagonal monomers,and the adjacent two monomers are fixedly connected.The anti-impact layer is two layers,which can maintain lateral stability under the impact of waves and currents,so it can reduce the erosion of waves and currents on the foundation pile.With honeycomb structure,less material is used in the anti-impact layer under the same area,but the anti-impact effect is stronger,and it will not move with the erosion of waves and currents,and the anti-impact effect is stable and efficient.
作者
史卜涛
苗运赞
迟洪明
李红有
SHI Butao;MIAO Yunzan;CHI Hongming;LI Hongyou(Longyuan(Beijing)Wind Power Engineering Design Consulting Co.,Ltd.,Beijing 100034,China)
出处
《建筑结构》
北大核心
2023年第S01期2988-2991,共4页
Building Structure
基金
龙源电力集团科技项目(LYB-2020-063)
关键词
海上风机
光滑粒子流体动力学
防冲刷结构
offshore wind turbine
smooth particle hydrodynamics
anti-scour structure
