海上风电斜桩基础局部冲刷数值模拟研究

海上风电项目中导管架斜桩基础应用越来越多,研究斜桩基础局部冲刷效应非常重要.采用Flow3D数值模拟方法,建立斜桩基础局部冲刷数值模拟,分析不同桩基倾斜角度以及桩径对斜桩基础局部冲刷效果的影响规律,得到了以下结论:斜桩桩周土体局部最大冲刷深度均随时间变化先迅速增大再缓慢增加,流态稳定后,冲刷深度也趋于稳定,直径为2.3...

Numerical Simulation Research on Local Scouring of Offshore Wind Power Inclined Pile Foundation

There are more and more applications of jacket inclined pile foundations in offshore wind power projects.It is very important to study the local scouring effect of inclined pile foundations.The Flow^(3 D) numerical simulation method is used to establish a numerical simulation model of local scouring condition,and the influences of inclination angles and pile diameters on local scouring effect of inclined pile foundations is analyzed respectively.The main conclusions are as follows:(a) the maximum local scouring depth of soil around the inclined pile increases rapidly and then slowly with time,after the flow pattern is stable,the scouring depth also tends to be stable,and the final stable scouring depths of inclined piles with diameters of 2.3 m and 3 m are 1.098 m and 1.198 m respectively;(b) the maximum scouring depth is mainly on both sides of the pile,the soil deposition occurs behind the pile forming a long trailing tail,and a small-scale soil accumulation also occurs in front of the pile;and(c) the inclination angle has a certain influence on the scouring form,but has little effect on scouring depth.