欢迎访问《太阳能学报》官方网站,今天是 分享到:
ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (4): 359-365.DOI: 10.19912/j.0254-0096.tynxb.2020-0759

• 电化学储能安全性与退役动力电池梯次利用关键技术专题 • 上一篇    下一篇

局部冲刷对复合筒基风电结构体系动力响应影响

于通顺1,2, 唐俊辉1, 刘梅梅3, 徐昱2, 张舒博1   

  1. 1.中国海洋大学工程学院,青岛 266100;
    2.山东省海洋工程重点实验室,青岛 266100;
    3.中交四航工程研究院有限公司,广州 510230
  • 收稿日期:2020-08-04 出版日期:2022-04-28 发布日期:2022-10-28
  • 通讯作者: 徐昱(1973—),男,博士、实验师,主要从事海岸工程水动力试验方面的研究。xuyu@ouc.edu.cn
  • 基金资助:
    国家自然科学基金(52071304; 51509230); 山东省重点研发计划(2019GHY112044); 广州市珠江科技新星专项(201806010164

INFLUENCE OF LOCAL SCOUR ON DYNAMIC RESPONSE OF WIND TURBINE STRUCTURE SYSTEM WITH COMPOSITE BUCKET FOUNDATION

Yu Tongshun1,2, Tang Junhui1, Liu Meimei3, Xu Yu2, Zhang Shubo1   

  1. 1. College of Engineering, Ocean University of China, Qingdao 266100, China;
    2. Shandong Provincial Key Laboratory of Ocean Engineering, Qingdao 266100, China;
    3. CCCC Fourth Harbor Engineering Institute Co. Ltd., Guangzhou 510230, China
  • Received:2020-08-04 Online:2022-04-28 Published:2022-10-28

摘要: 建立风力机塔筒-复合筒型基础-冲刷地基的耦合动力分析模型,通过实测数据验证数值模型的准确性。基于已完成的复合筒基地基冲刷试验,在耦合动力模型中实现冲刷地基模型的准确建立,考虑局部冲刷后应力历史对剩余土体参数的影响,分析风力机结构体系的动力响应特征,将计算结果与不考虑冲刷影响的计算结果进行对比。结果表明:地基的冲刷使得风力机结构的自振频率降低,增大了复合筒基风力机结构体系运行的危险;考虑地基冲刷后复合筒基的运动速度有较明显的提升,提升幅度最大约为8%,因此在进行复合筒基风力机设计时,必须考虑地基冲刷对动力特性的影响;在局部冲刷对复合筒基风电结构体系动力响应影响的研究中可忽略冲刷后应力历史对土质参数的影响。

关键词: 风力机, 局部冲刷, 模态, 动力响应, 复合筒型基础, 应力历史

Abstract: Firstly, the dynamic coupling model of wind generator tower-composite bucket foundation-foundation is established. The accuracy of the numerical model is verified by measured data from the actual engineering. Then, based on the published experimental results of wave and current scour around composite bucket foundation, the accurate scoured topography is established in the numerical model and the effect of the stress history after local scour on the remaining soil foundation parameters is considered. At last, the dynamic response characteristics of the wind turbine structure system are analyzed. The results are compared with those without considering local scour. Analysis results show that local scour to foundation reduces the natural vibration frequency of wind turbine structure, which leads to bigger generation risk of the wind turbine structure system. The vibration speed of the composite bucket foundation increase obviously after considering local scour of the foundation, and the maximum increase value reached to 8%. So the influence of local scour on the dynamic response of the structure system must be considered in the design of offshore wind turbines with composite bucket foundation, but the effect of the stress history after local scour on the remaining soil foundation parameters can be ignored.

Key words: local scour, mode, dynamic response, composite bucket foundation, stress history

中图分类号: