| 基于提升小波的框架结构损伤识别研究 |
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| 引用本文： | 孙增寿,张波,范科举.基于提升小波的框架结构损伤识别研究[J].世界地震工程,2010,26(4). |
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| 作者姓名： | 孙增寿 张波 范科举 |
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| 作者单位： | 1. 郑州大学土木工程学院,河南,郑州,450002
2. 中铁大桥局集团第一工程有限公司,河南,郑州,450053 |
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| 基金项目： | 国家自然科学基金项目(50878198) |
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| 摘 要： | 提升小波分析方法可以将信号按任意精度进行分解,具有优越的时、频局部化性能。文中在提升小波分析基础上提出了框架结构的损伤检测和识别方法。首先将结构加速度响应信号进行提升小波变换,然后采用单支重构的方法获取细节信号,通过细节信号的突变特征识别结构损伤情况,并用悬臂梁的数值模拟和三层框架模型结构试验验证了所提出方法的实用性。
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| 关 键 词： | 框架结构 损伤检测 损伤识别 提升小波分析 细节信号 |
Damage identification research of frame structures based on lifting wavelet |
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| SUN Zengshou,ZHANG Bo,FAN Keju.Damage identification research of frame structures based on lifting wavelet[J].World Information On Earthquake Engineering,2010,26(4). |
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| Authors: | SUN Zengshou ZHANG Bo FAN Keju |
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| Institution: | SUN Zengshou1,ZHANG Bo1,FAN Keju2(1.School of Civil Engineering,Zhengzhou University,Zhengzhou 450002,China,2.China Zhongtie Major Bridge Engineering Group Co.,LTD,Zhengzhou 450003,China) |
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| Abstract: | The lifting wavelet analysis method can decompose the signal with arbitrary precision,and it has an excellent localized performance in time-frequency domain.On the basis of lifting wavelet analysis,a damage detection and identification method of frame structure is presented in this paper.First,the structural acceleration response signal is transformed by lifting wavelet.Then,the detail signal is reconstructed by using single-branch.The mutation characteristics of detail signal are used to identify the struc... |
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| Keywords: | frame structure damage detection damage identification lifting wavelet analysis detail signal |
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