Abstract
Due to the lack of reliable long-period ground motion records, the influence of long-period ground motion on seismic performance of wind turbines is not studied sufficiently. Therefore, we have selected three sets of ground motion records with significant long-period components from 1999 Taiwan Chi-Chi earthquake and 2010 New Zealand Darfield earthquake in order to discuss the characteristics of their absolute acceleration amplification coefficient spectra and the relative displacement response spectrum. In addition, the paper took a typical 80-meter-high wind turbine structure in Northwest China as an example and investigated the seismic performance of the wind turbine via an integrated finite element model of the blade–cabin–tower. Three sets of ground motion records were taken as inputs to carry out the time-history analysis under the rare earthquake of the seismic fortification intensity zone 8. The results show that the displacement, acceleration, stress, and internal force of the wind turbine structure under long-period ground motions are relatively significant, which indicates that enough attention should be paid to the influence of long-period ground motions on the seismic performance of the flexible structure with large period.
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Acknowledgements
The authors would like to gratefully acknowledge the supports from the National Natural Science Foundation of China (Grant No. 51568041), and the Hongliu Excellent Young Scholar Support Program of Lanzhou University of Technology.
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Li, W., Huang, J., Du, Y. (2019). Dynamic Response Analysis of Wind Turbines Under Long-Period Ground Motions. In: Zhou, Y., Wahab, M., Maia, N., Liu, L., Figueiredo, E. (eds) Data Mining in Structural Dynamic Analysis. Springer, Singapore. https://doi.org/10.1007/978-981-15-0501-0_4
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DOI: https://doi.org/10.1007/978-981-15-0501-0_4
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