| ????Hilbert-Huang?任?????????????????Ч????? |
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| 引用本文： | 刘强,周瑞忠,刘宇航. ????Hilbert-Huang?任?????????????????Ч?????[J]. 力学与实践, 2008, 30(5): 19-23. DOI: 10.6052/1000-0879-2008-086 |
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| 作者姓名： | 刘强 周瑞忠 刘宇航 |
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| 作者单位： | 集美大学，福建 厦门 36102 |
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| 摘 要： | 通过Hilbert-Huang变换得到地震波的时间-频率-振幅分布图，并对地震动动力特性进行分析，创造性地提出了用地震动峰值能量的最大值(即时频密度函数的最大值)和峰值系数作为评估地震动震动效应强弱的定量指标,初步建立了地震动震动效应评估的判据；并用实例验证了该判据的可行性和可靠性.
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| 关 键 词： | 地震效应 Hilbert-Huang变换 时频密度函数 平稳度 峰值系数 |
| 收稿时间： | 2008-02-29 |
| 修稿时间： | 2008-06-04 |
EVALUATION OF ENERGY AND SEISMIC EFFECT OF EARTHQUAKE WAVE BASED ON HHT ANALYSIS |
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| LIU Qiang , ZHOU Ruizhong , LIU Yuhang. EVALUATION OF ENERGY AND SEISMIC EFFECT OF EARTHQUAKE WAVE BASED ON HHT ANALYSIS[J]. Mechanics and Engineering, 2008, 30(5): 19-23. DOI: 10.6052/1000-0879-2008-086 |
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| Authors: | LIU Qiang ZHOU Ruizhong LIU Yuhang |
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| Abstract: | The Hilbert spectra of frequency-time-amplitude can beobtained by HHT and be applied to dynamic analysis of the seismicsignal. A quantitative index to evaluate strengthof vibration effect by the use of the maximum energy (integralof the time-domain frequency density function) and the crest factor ofearthquake wave are put forword, as a preliminary unified criterion ofvibration effect, and the feasibility and reliability of thecriterion are validated by several instances. |
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