| 基于小波包和频响函数随机——模糊统计的斜拉桥损伤识别 |
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| 引用本文： | 宋子收,周奎,李胡生.基于小波包和频响函数随机——模糊统计的斜拉桥损伤识别[J].公路,2011(4):25-29. |
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| 作者姓名： | 宋子收 周奎 李胡生 |
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| 作者单位： | 1. 上海理工大学环境与建筑学院,上海市,200093
2. 上海应用技术学院城市建设与安全工程学院,上海市,200235 |
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| 基金项目： | 上海市科委科技攻关项目,项目编号072105115 |
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| 摘 要： | 针对单一方法损伤识别的缺点,提出了基于频响函数和小波包能量谱的斜拉桥损伤识别指标,结构损伤前后的频响函数作为信号,进行小波包能量谱分析.由于试验中的频响函数存在一定的随机模糊性,对完好状态下的10次频响函数值进行了随机模糊均值处理,得到的频响函数作为基准.独塔斜拉桥模型实验表明,斜拉桥的一处和两处的损伤都可以识别,损伤...
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| 关 键 词： | 斜拉桥 损伤识别 小波包 频响函数 随机模糊 |
Damage Identification of Cable-Stayed Bridge Based on Wavelet Packet and Random-Fuzzy Statistical of Frequency Response Function |
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| SONG Zi-shou,ZHOU Kui,LI Hu-sheng.Damage Identification of Cable-Stayed Bridge Based on Wavelet Packet and Random-Fuzzy Statistical of Frequency Response Function[J].Highway,2011(4):25-29. |
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| Authors: | SONG Zi-shou ZHOU Kui LI Hu-sheng |
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| Institution: | SONG Zi-shou1,ZHOU Kui1,LI Hu-sheng2(1.School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China,2.School of Civil Construction and Security Engineering,Shanghai Institute of Technology,Shanghai 200235,China) |
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| Abstract: | Single method for structural damage identification is not sensitive to some damages,a comprehensive damage identification method in combination with wavelet packet and frequency response function(FSF)is proposed to cable-stayed bridge.FSF which comes from damaged and undamaged structure as signal to be carried out by wavelet packet.As there is random-fuzzy in FSF,10 times FSF from undamaged bridge are put into random-fuzzy mean processing,through experiment of one cable-stayed bridge,one and two damage can ... |
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| Keywords: | cable-stayed bridge damage identification wavelet packet frequency function random-fuzzy |
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