| 小波包分析在结构损伤监测中的应用 |
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| 引用本文： | 王保同,李雪梅.小波包分析在结构损伤监测中的应用[J].建筑技术开发,2005(12). |
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| 作者姓名： | 王保同 李雪梅 |
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| 作者单位： | 城建局设计室(王保同)，德阳建筑职业技术学院 河北唐县(李雪梅) |
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| 摘 要： | 小波分析具有良好的时频局部化性质,特别适合于分析和处理突变信号。在获得结构的动力响应的基础上,对结构响应信号做小波包分解。根据各种响应信号对损伤的灵敏度,选择损伤特征,通过捕捉结构出现损伤的时刻,实现对结构损伤时刻监控。为模拟测试实际结构响应噪声的影响,在第一层加速响应信号中加入信噪比为5:1的白噪声,运用小波包消噪后再运用小波包分解识别结构的损伤时刻。
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| 关 键 词： | 损伤时刻识别 动力响应 小波包分析 信噪比 |
APPLICATION OF WAVELET PACKET ANALYSIS FOR CONSTRUCTION DAMAGE MONITORING |
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| Wang Bao-tong Li Xue-mei.APPLICATION OF WAVELET PACKET ANALYSIS FOR CONSTRUCTION DAMAGE MONITORING[J].Building Technique Development,2005(12). |
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| Authors: | Wang Bao-tong Li Xue-mei |
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| Affiliation: | Wang Bao-tong Li Xue-mei |
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| Abstract: | Wavelet transform has the good property of time-frequency localization,which is especially fit for analyzing and processing the singular signal.In this paper,the main subject is calculating the dynamics response of construction, Then decompose the structure response signal with wavelet tools after denoising.Choosing the damage character by comparing the susceptibility to damage among every response signal,the real-time monitoring for construction is catching the damaging moment. For simulating noise infection in testing construction responses,Dynamical response in the first layer is joined Signal-to-Noise 5 :1,first using wavelet packet analysis eliminate noise and the using wavelet packet analysis densification construction damage time. |
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| Keywords: | Damage time identification Dynamical response Wavelet packet analysis Signal-to-Noise |
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