| 求解反应谱的小波方法及汶川地震反应谱分析 |
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| 引用本文： | 谢异同,曲高峰,盛涛,邵辉成.求解反应谱的小波方法及汶川地震反应谱分析[J].世界地震工程,2010,26(4). |
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| 作者姓名： | 谢异同 曲高峰 盛涛 邵辉成 |
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| 作者单位： | 1. 西安建筑科技大学土木学院,陕西,西安,710055
2. 陕西省地震局分析预报中心,陕西,西安,710053 |
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| 基金项目： | 国家自然科学基金项目(50478045) |
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| 摘 要： | 采用四阶基数B-样条小波模拟地震动加速度时程,进而建立一种求地震反应的通用方法,解的误差仅来自于对地震动加速度时程的模拟。并用小波分解,将地震波分解为不同周期成分之和,以各分量最大加速度值的大小来衡量其在原波中的比重,可以清楚看到距震中不同远近地震波的性态,并做定量分析和观察各分量卓越周期的变化。求地震波及各分量的反应谱,从各分量的标准加速度反应谱中,可以看到地震波不同周期分量对体系固有周期的影响,这是以往做不到的。将上述方法应用于汶川8.0级地震加速度记录,研究不同地震记录的性态。
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| 关 键 词： | 小波分析 小波分解 地震反应谱 卓越周期 |
The wavelet method for solving response spectrum and response spectrum analysis of Wenchuan earthquake |
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| XIE Yitong,QU Gaofeng,SHENG Tao,SHAO Huicheng.The wavelet method for solving response spectrum and response spectrum analysis of Wenchuan earthquake[J].World Information On Earthquake Engineering,2010,26(4). |
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| Authors: | XIE Yitong QU Gaofeng SHENG Tao SHAO Huicheng |
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| Institution: | XIE Yitong1,QU Gaofeng1,SHENG Tao1,SHAO Huicheng2(1.College of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China,2.Center for Analysis and Prediction,Seismological Bureau of Shanxi,Xi'an 710053,China) |
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| Abstract: | 4th order cardinal B-spline wavelets are applied to the simulation of acceleration histories of earthquake ground motion,and an universal method is established for computing the dynamic response of structures,the precision of which is lied on the simulation of the acceleration histories only.Wavelet transform is utilized to decompose an earthquake acceleration record into several wavelet components,and the natural periods of which are different from each other.Each component's proportion of the original acc... |
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| Keywords: | wavelet analysis wavelet transform response spectra nature period |
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