摘要
说明了我国风力机地震响应评估的重要性;对结构的抗震要求提出了建议;总结了风力机结构地震响应分析中需重点关注的因素;论述了国内外学者的研究历程,从理论分析、计算和试验等方面总结和评述了各国学者的研究成果,这些研究成果在结构的低阻尼、大型机高阶模态贡献、SSI效应和现有建筑结构规范的适用性等方面得到了一致的结论;分析了现有研究存在的不足,并从多维地震动下结构的响应、气动阻尼的识别、塔-叶片耦合振动、混凝土塔架的应用、弹塑性地震响应分析和近海风力机的特点等方面,提出了未来的研究趋势。
The significance of seismic response evaluation on wind turbines in China was investigated.The seismic requirements on wind turbines were suggested.Influence factors of structural seismic response were summarized.The history of research was reviewed from the aspect of theoretical analysis,calculation and experimental study.Domestic and foreign scholars＇ research results on low damping,high modes＇ contribution of high tower,SSI effects and applicability of building code are consistent.The authors＇ opinions on the shortcomings of existent practices were discussed.In seismic active regions,the research trends of seismic response analysis on wind turbines are likely to focus on structural response under multi-dimensional ground motion,identification of aerodynamic damping,tower-rotor coupled vibration,the application of concrete tower,elasto-plastic seismic response analysis,and characteristics of offshore wind turbines.
出处
《结构工程师》
2010年第6期155-163,共9页
Structural Engineers
关键词
风能
地震响应
反应谱法
时域法
风力机
低阻尼
wind energy
seismic response
response spectrum method
time domain method
wind turbine
low damping
