Zonal Coupling Analysis Method of Seismic Response of Offshore Monopile Wind Turbine  

近海单桩式风机地震响应分区耦合分析方法

作　　者：XU Xiaofeng CHEN Shaolin SUN Jie 徐小凤;陈少林;孙杰(南京航空航天大学民航学院,南京211106;中国电力工程顾问集团华东电力设计院有限公司,上海200063;中国能源建设集团江苏省电力设计院有限公司,南京211106)

机构地区：[1]College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,P.R.China [2]East China Electric Power Design Institute Co.,Ltd.,China Power Engineering Consulting Group,Shanghai 200063,P.R.China [3]Jiangsu Power Design Institute Co.,Ltd.,China Energy Engineering Group,Nanjing 211106,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2024年第S01期103-110,共8页南京航空航天大学学报（英文版）

基　　金：supported in part by the National Natural Science Foundation of China(Nos.51978337,U2039209).

摘　　要：The seismic safety of offshore wind turbines is an important issue that needs to be solved urgently.Based on a unified computing framework,this paper develops a set of seawater-seabed-wind turbine zoning coupling analysis methods.A 5 MW wind turbine and a site analysis model are established,and a seismic wave is selected to analyze the changes in the seismic response of offshore monopile wind turbines under the change of seawater depth,seabed wave velocity and seismic wave incidence angle.The analysis results show that when the seawater increases to a certain depth,the seismic response of the wind turbine increases.The shear wave velocity of the seabed affects the bending moment and displacement at the bottom of the tower.When the angle of incidence increases,the vertical displacement and the acceleration of the top of the tower increase in varying degrees.海上风机的地震安全性问题是急需解决的重要课题。本文基于统一计算框架,发展了一套海水-海床-风机分区耦合分析方法,并建立了5 MW风机及场地分析模型,同时选取了一条地震波,分析了在海水深度、海床波速和地震波入射角度改变的情况下近海单桩式风机地震响应的变化。分析结果表明,当海水增加到某深度时,风机的地震响应会增大;海床剪切波速会影响塔底弯矩和位移;当入射角度增大时,塔顶竖向位移和加速度均有不同程度的增大。

关 键 词：offshore monopile wind turbine seismic response analysis soil-junction interactions fluid-structure inter-action 

分 类 号：TU31[建筑科学—结构工程]