| 某1.5MW风电塔振动台缩尺模型设计 |
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| 引用本文： | 孟家瑶,戴靠山,,毛振西,王英,赵志.某1.5MW风电塔振动台缩尺模型设计[J].世界地震工程,2018,34(4):191-198. |
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| 作者姓名： | 孟家瑶 戴靠山 毛振西 王英 赵志 |
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| 作者单位： | 1. 同济大学 土木工程防灾重点国家试验室, 上海 200092;2. 四川大学 土木工程系, 成都 610065 |
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| 摘 要： | 风电塔是一种顶部有较大偏心质量的高耸薄壁悬臂结构，以某1.5MW水平轴三叶片风电塔为研究对象，重点关注风电塔振动台试验缩尺模型设计。根据量纲分析理论和相似条件，基于模型质量分布和刚度分布等效原则，设计模型塔筒截面及附加质量，保证模型与原型结构自振频率和振型相似。通过对比分析模型动力特性测试结果与原型实测结果，验证了该模型设计方法的合理性，可为同类型风电塔振动台试验设计提供参考与依据。针对该柔性对称高塔模型在动力特性测试中出现的正交耦合振动及拍振现象也进行了详细阐述。
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| 关 键 词： | 风电塔 振动台试验 模型缩尺设计 动力特性测试 耦合振动 |
Shaking table test model design of a 1.5MW wind turbine tower |
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| MENG Jiayao,DAI Kaoshan,' target="_blank" rel="external">,MAO Zhenxi,WANG Ying,ZHAO Zhi.Shaking table test model design of a 1.5MW wind turbine tower[J].World Information On Earthquake Engineering,2018,34(4):191-198. |
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| Authors: | MENG Jiayao DAI Kaoshan " target="_blank">' target="_blank" rel="external"> MAO Zhenxi WANG Ying ZHAO Zhi |
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| Institution: | 1. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;2. Department of Civil Engineering, Sichuan University, Chengdu 610065, China |
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| Abstract: | The support towers of wind turbines are characterized as thin-walled tubular steel structures with nacelle and rotor mounted at the top and therefore imparted heavy eccentric mass. Exsting studies on seismic performances of these unique structures are far from complete. Scaled-down model testing is an effective way to promote wind turbine research considering the tower’s large scale feature. The methodology for a shaking table test model design of a 1.5MW wind turbine tower was interpreted in this paper. Overall, the experimental model was designed based on dimensional analysis and similarity theory. Tower sections and additional weight were determined by the equivalent mass and stiffness distribution principle, in order to satisfy the frequency and mode shape similarity relationship as well as manufacturing needs. The rationality of the model design was proved by comparing dynamic properties between the model and prototype wind turbine, which were identified from shaking table tests and field tests, respectively. Coupled vibration and beat frequency phenomena of the model were observed and the mechanisms were discused at length in this paper. |
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| Keywords: | wind turbine tower shaking table test scaled-down model design dynamic testing vibration coupling |
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