Classification method for long period ground motions based on component decomposition with HHT

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (7) : 164-171.

ZHAO Chenxiao1，LI Yingmin1,2，TAN Qian1

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Abstract

Long period component is a decisive one to reflect basic characteristics of long period ground motions (LPGMs). Based on Hilbert-Huang Transformation (HHT), in ground motion’s acceleration response spectrum, intrinsic mode functions (IMFs) with average period  2.0s and residual components were extracted to reconstruct a signal which was taken as the long period component of the original ground motion after baseline correction. The rationality of classifying a long period component was verified using the correlation analysis between the long period component and the original ground motion and effects of the long period component on structural responses of a super high-rise building. The long period ground motions indicator (LPGI) based on long period component characteristics was proposed, it was shown that the ground motion is LPGM when its .The time interval needed for the area between the normalized Hilbert accumulated energy curve of a long period component and time axis to increase from 5% to 95% was proposed to represent pulse characteristics of LPGM. Thus the two kinds of special LPGMs including far-field LPGMs and near-field ones were distinguished. The results provided a better method and a parametric indicator for distinguishing LPGMs.

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HHT / average period / long period component / long period ground motions / classification method

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ZHAO Chenxiao1，LI Yingmin1,2，TAN Qian1. Classification method for long period ground motions based on component decomposition with HHT[J]. Journal of Vibration and Shock, 2018, 37(7): 164-171

References

[1] Hanks Thomas C. Strong ground motion of the San Fernando, California, earthquake: Ground displacements[J]. Bulletin of the Seismological Society of America, 1975, 65 (1): 193-225.
[2] Koketsu Kazuki, Miyake Hiroe. A seismological overview of long-period ground motion[J]. Journal of Seismology, 2008, 12(2): 133-143.
[3] 徐龙军, 胡进军, 谢礼立. 特殊长周期地震动的参数特征研究[J]. 地震工程与工程振动，2008，28(6)：20-27.
Longjun X. U., Jinjun H. U., Lili XIE. On characteristics of ground motion parameters for special long-period ground motions[J]. Journal of Earthquake Engineering and Engineering Vibration，2008，28(6)：20-27.
[4] Baker J. W. Quantitative classification of near-fault ground motions using wavelet analysis[J]. Bulletin of the Seismological Society of America，2007，97(5)：1486-1501.
[5] Farid Ghahari S., Jahankhah Hossein, Ghannad M. Ali. Study on elastic response of structures to near-fault ground motions through record decomposition[J]. Soil Dynamics and Earthquake Engineering，2010，30(7)：536-546.
[6] 徐龙军, 赵国臣, 谢礼立. 基于分量分离方法的地震动反应谱[J]. 天津大学学报(自然科学与工程技术版，2013，46(11)：1003-1011.
Xu Longjun, Zhao Guochen, Xie Lili. Ground motion response spectra through component decomposition method[J]. Journal of Tianjin University(Science and Technology)，2013，46(11)：1003-1011.
[7] 李雪红, 王文科, 吴迪, 徐秀丽, 李枝军, 李晔暄. 长周期地震动的特性分析及界定方法研究[J]. 振动工程学报，2014，27(5)：685-692.
Li Xuehong, Wang Wenke, Wu Di, Xu Xiuli, Li Zhijun, Li Yexuan. The bounded method and characteristics analysis for long-period ground motions[J]. Journal of Vibration Engineering，2014，27(5)：685-692.
[8] Huang N. E., Shen Z., Long S. R., Wu M. C., Shih H. H. The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis[J]. Proceedings of the Royal Society, 1998, A (454): 903–995.
[9] 张郁山. 希尔伯特—黄变换（HHT）与地震动时程的希尔伯特谱[D].北京：中国地震局地球物理研究所，2003.
Zhang Yushan. Hilbert-Huang Transform and Hilbert Spectrum of Earthquake Ground Motion[D].Beijing：Institute of Geophysics,China Seismological Bureau，2003.
[10] 张振炫, 陈清军. 高层建筑结构长周期地震反应的比较研究[J]. 结构工程师，2009，225(4)：78-84.
Zhang Zhenxuan, Chen Qingjun. A comparative study on long-period seismic responses for high-rise structures[J]. Structural Engineers，2009，225(4)：78-84.
[11] 王博, 白国良, 王超群, 代慧娟. 基于Hilbert-Huang变换的长周期地震动能量时频分布比较研究[J]. 地震工程与工程振动，2013，33(3)：71-80.
Wang Bo, Bai Guoliang, Wang Chaoqun, Dai Huijuan. Comparative study on energy time-frequency distribution of long-period ground motions based on Hilbert-Huang Transform[J]. Journal of Earthquake Engineering and Engineering Vibration，2013，33(3)：71-80.
[12] 王博. 多类型长周期地震动作用下高层结构的动力行为与设计方法研究[D].西安：西安建筑科技大学，2013.
Wang Bo. Study on dynamic behavior and design method of high-rise structures under multi-type long-period ground motions[D]. Xi'an：Xi'an University of Architecture & Technology，2013.
[13] 韩建平, 苏彦兵. 长周期地震动输入下某超限高层结构反应分析——以汶川地震和日本东北地震记录为例[J]. 建筑结构，2014，44(18)：59-62.
Han Jianping, Su Yanbing. Seismic response analysis of an out-of-code high-rise building under long-period ground motion: case studies of Wenchuan Earthquake and Japan Tohoku Earthquake records[J]. Building Structure，2014，44(18)：59-62.
[14] 陈清军, 袁伟泽. 基于长周期地震动记录的SDOF体系能量谱探讨[J]. 振动与冲击，2013，32(10)：36-42.
Chen Qingjun, Yuan Weize. Energy spectrum of SDOF systerm based on long-period ground motion records[J]. Journal of Vibration and Shock，2013，32(10)：36-42.
[15] 王博, 白国良, 代慧娟. 典型地震动作用下长周期单自由度体系地震反应分析[J]. 振动与冲击，2013，32(15)：190-196.
Wang Bo, Bai Guoliang, Dai Huijuan. Seismic response analysis of long-period SDOF system