近海单桩式风机地震响应分区耦合分析方法
Zonal Coupling Analysis Method of Seismic Response of Offshore Monopile Wind Turbine
徐小凤 1陈少林 2孙杰3
作者信息
- 1. 南京航空航天大学民航学院,南京 211106,中国;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
- 2. 南京航空航天大学民航学院,南京 211106,中国
- 3. 中国能源建设集团江苏省电力设计院有限公司,南京 211106,中国
- 折叠
摘要
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.
Abstract
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.
关键词
近海单桩式风机/地震响应分析/土-结相互作用/流固耦合Key words
offshore monopile wind turbine/seismic response analysis/soil-junction interactions/fluid-structure inter-action引用本文复制引用
基金项目
National Natural Science Foundation of China(51978337)
National Natural Science Foundation of China(U2039209)
出版年
2024
国家科技期刊平台
NSTL
万方数据