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[1]XIE Haoyu,HONDA Riki,ZHENG Wanshan.Phase Randomization of Ground Motions with Arbitrary Time-frequency Range Using Complex Continuous Wavelets[J].Journal of Seismological Research,2019,42(04):510-515.

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Phase Randomization of Ground Motions with Arbitrary Time-frequency Range Using Complex Continuous Wavelets

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 42 Number of periods: 2019 04 Page number: 510-515 Column: Public date: 2019-12-15

Title:: Phase Randomization of Ground Motions with Arbitrary Time-frequency Range Using Complex Continuous Wavelets

Author(s):: XIE Haoyu¹; HONDA Riki²; ZHENG Wanshan¹; (1.CMCT Research & Design Institute Co.,LTD,Chongqing 400060,China)(2.Graduate School of Frontier Science,The University of Tokyo,Kashiwa 277-8561,Chiba,Japan)

Keywords:: seismic design; artificial ground motion; wavelet transform; input ground motion

CLC:: P315.91

DOI:: -

Abstract:: For dynamic analysis,selection of input ground motions is of huge importance.The diversity of the set of input ground motions could be enhanced by simulating the artificial ground motions from natural earthquakes.A methodology utilizing complex continuous wavelets to simulate artificial ground motions areput forward,taking the 2000 Tottori earthquake(b>W6.7)as aresearch target,and the characteristics of the Shannon wavelet and the Gabor wavelet are compared in the article.The result shows that the new methodology could have time-frequency domain arbitrarily oriented,and the Shannon wavelet is the optimal choice as it could maintain the power better than the Gabor wavelet.

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Last Update: 2019-12-15