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首页> 外文期刊>Bulletin of earthquake engineering >Effect of pulse-like near-fault ground motions on utility-scale land-based wind turbines
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Effect of pulse-like near-fault ground motions on utility-scale land-based wind turbines

机译：脉冲样近断层地运动对公用尺度陆基风力涡轮机的影响

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Seismic response of a utility-scale land-based wind turbine to near-fault pulse-like ground motions is presented in this study. The structural model corresponds to the 5-MW prototype developed by National Renewable Energy Laboratory. Response parameters such as tower-top displacement, base shear, and overturning moment are calculated by time history analysis and response spectral analysis using different estimates of response spectra. The results show that peak ground velocity and the frequency of dominant pulse of the ground motion are critical parameters governing the response, while peak ground acceleration has very weak correlation to response. When the pulse period is in the vicinity of structural period, seismic response is found to be much larger than those imposed by extreme events in design wind loads. Response spectral analysis using the actual spectra obtained from actual ground motions yielded results close to those from time history analysis. The spectral model prescribed in Eurocode8 is found to be inadequate in representing near-fault seismic action on the wind turbine.
机译：本研究介绍了公用尺度陆基风力涡轮机对接近故障脉冲状地运动的地震反应。结构模型对应于国家可再生能源实验室开发的5MW原型。响应参数如塔式位移，基础剪切和推翻时刻是通过使用不同响应谱的不同估计的时间历史分析和响应光谱分析来计算。结果表明，峰值接地速度和地面运动的主导脉冲的频率是控制响应的关键参数，而峰接地加速度与响应的相关性很弱。当脉冲周期位于结构周期附近时，发现地震响应远远大于设计风荷载中的极端事件所施加的响应。使用从实际地运动获得的实际光谱的响应光谱分析产生接近时间历史分析的结果。在欧元建数8中规定的光谱模型被认为是在风力涡轮机上代表近断层的地震作用不充分。

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