兰州理工大学学报

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (2): 107-114.

• 建筑科学 • 上一篇    下一篇

风力发电结构在风沙荷载激励下的动力响应分析

李万润*1,2,3, 黄杰1, 丁明轩1, 李德强4, 王雪平1,3, 杜永峰1,2,3   

  1. 1.兰州理工大学 防震减灾研究所, 甘肃 兰州 730050;
    2.兰州理工大学 甘肃省土木工程减震隔震国际科技合作基地, 甘肃 兰州 730050;
    3.兰州理工大学西部土木工程防灾减灾教育部工程研究中心, 甘肃 兰州 730050;
    4.中国华电集团有限公司甘肃公司
  • 收稿日期:2020-01-22 出版日期:2022-04-28 发布日期:2022-05-07
  • 通讯作者: 李万润(1985-),男,甘肃民勤人,博士,教授.Email:ce_wrli@lut.edu.cn
  • 基金资助:
    国家自然科学基金(51568041,51908266),甘肃省土木工程减震隔震国际科技合作基地定向开放基金(GII2018-N04),甘肃省土木建筑学会青年科技托举人才项目

Dynamic response analysis of wind turbine structure under wind and sand load excitation

LI Wan-run1,2,3, HUANG Jie1, DING Ming-xuan1, LI De-qiang4, WANG Xue-ping1,2,3, DU Yong-feng1,2,3   

  1. 1. Institution of Earthquake Protection and Disaster Mitigation,Lanzhou Univ. of Tech., Lanzhou 730050, China;
    2. International Research Base on Seismic Mitigation and Isolation of Gansu Province, Lanzhou Univ. of Tech., Lanzhou 730050, China;
    3. Disaster Prevention and Mitigation Engineering Research Center of Western Civil Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
    4. China Huadian Corporation Gansu Company
  • Received:2020-01-22 Online:2022-04-28 Published:2022-05-07

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摘要： 为研究风沙荷载对风力发电结构的危害,对风力发电结构进行风沙荷载作用下的动力响应分析.基于某2 MW风力发电机,建立不考虑风机叶片、考虑叶片旋转以及考虑土-结构相互作用的三种有限元模型.采用Davenport风速谱和谐波叠加法模拟脉动风速时程,利用动量守恒定律和风沙流密度建立风沙荷载力学计算模型.通过ANSYS分别模拟三种模型在风荷载和风沙荷载作用下的动力响应.结果表明:风力发电结构在风沙荷载作用下响应较大,其作用不容忽略;采用简化的集中质量模型进行数值模拟时得到的结果偏于不安全;土-结构相互作用对风荷载及风沙荷载作用下的位移响应均具有明显的放大效应.

关键词: 风力发电结构, 有限元模型, 风荷载, 风沙荷载, 动力响应

Abstract: To study the damage of wind-sand load to wind turbine, the dynamic response analysis of wind turbine under the load was analyzed. Based on 2 MW wind turbine, three finite element models are established, which do not consider blades, consider blade rotation, and consider soil-structure interaction. The Davenport wind speed spectrum and harmonic superposition method are used to simulate the pulsating wind speed time history, and the dynamic calculation model of wind and sand load is established by the law of conservation of momentum and wind and sand flow density. The dynamic responses of the model under the action of wind load and wind sand load are simulated by ANSYS. The results show that: the response of wind power generation structure under wind sand load is large, and its effect can not be ignored. The results obtained by numerical simulation with simplified lumped mass model are unsafe, and soil-structure interaction has obvious amplification effect on the displacement response under wind load and wind sand load.

Key words: wind turbines, finite element models, wind load, wind-blown-sand load, dynamic response

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