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| 基于小波分解的能量谱分析方法及其在汶川地震中的应用 | |
| 引用本文： | 谢异同,葛兴云,曲高峰,邵辉成.基于小波分解的能量谱分析方法及其在汶川地震中的应用[J].世界地震工程,2011,27(3). |
| 作者姓名： | 谢异同 葛兴云 曲高峰 邵辉成 |
| 作者单位： | 1. 西安建筑科技大学土木学院陕西西安710055 2. 烟台市建筑设计研究股份有限公司,山东烟台,264000 3. 陕西省地震局分析预报中心,陕西西安,710055 |
| 基金项目： | 国家自然科学基金项目(50478045) |
| 摘 要： | 利用小波分解将地震波分解成不同频带的小波分量,进而对地震波输入结构的总能量EI进行分解,得到能量在频域上的分布,这是一个有意义的结果。通过对各分量能量谱峰值的分析,可以从另一个方面得到地震波的频谱特性,能量谱峰值出现的结构固有周期与地震波傅里叶谱的卓越周期相同,也可以作为估算卓越周期的一种方法。 |
| 关 键 词： | 小波分解 总输入能量谱 能量分布 卓越周期 |
Wavelet-based analysis of the energy spectrum and its application to Wenchuan earthquake |
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| XIE Yitong,GE Xingyun,QU Gaofeng,SHAO Huicheng.Wavelet-based analysis of the energy spectrum and its application to Wenchuan earthquake[J].World Information On Earthquake Engineering,2011,27(3). | |
| Authors: | XIE Yitong GE Xingyun QU Gaofeng SHAO Huicheng |
| Institution: | XIE Yitong1,GE Xingyun1,QU Gaofeng2,SHAO Huicheng3(1.College of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China,2 Yantai Architectural Design And Research Co.,Ltd,Yantai 264000,3.Center for Analysis and Prediction,Shanxi Province Earthquake Administration,China) |
| Abstract: | The seismic wave is decomposed into components of different frequency bands of wavelet by using the wavelet decomposition transform,then the total energy of structure inputted by seismic wave is decomposed,and the energy distribution in the frequency domain is got,which is a meaningful result.By analysis of the peaks of each sub-component energy spectrum the spectral characteristics of seismic wave can be obtained,at which the spectrum peak occurs.The structural natural period at which the energy is the sam... |
| Keywords: | wavelet transform input energy spectra energy distribution predominant period |
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