| 基于统计的小波包分析的输电塔结构损伤预警 |
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| 引用本文： | 谭冬梅,秦文科. 基于统计的小波包分析的输电塔结构损伤预警[J]. 地震工程与工程振动, 2010, 30(4) |
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| 作者姓名： | 谭冬梅 秦文科 |
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| 作者单位： | 武汉理工大学,道路桥梁与结构工程湖北省重点实验室,湖北,武汉,430070;武汉理工大学,道路桥梁与结构工程湖北省重点实验室,湖北,武汉,430070 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 本文针对输电塔结构的损伤特点,提出了基于统计过程控制理论和小波包分析实现输电塔结构损伤预警的方法。首先将振动测试信号进行小波包分解,然后以小波包系数节点能量作为识别损伤的特征向量建立相应的损伤因子,通过统计过程控制理论计算其单侧置信上限,实现输电塔结构的损伤预警。为了证明该方法,对一个三层输电塔结构模型进行了试验研究,结果表明该方法能够有效地识别损伤的发生。
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| 关 键 词： | 输电塔 小波包 结构损伤 统计过程控制 |
Damage pre-warning of transmission tower based on statistical wavelet packet analysis |
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| TAN Dongmei,QIN Wenke. Damage pre-warning of transmission tower based on statistical wavelet packet analysis[J]. Earthquake Engineering and Engineering Vibration, 2010, 30(4) |
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| Authors: | TAN Dongmei QIN Wenke |
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| Affiliation: | TAN Dongmei,QIN Wenke(Hubei Key Laboratory of Roadway Bridge & Structure Engineering,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | For damage pre-warning of transmission tower structure,the application study on damage identification of transmission tower based on wavelet packet analysis and statistical process control is developed.Firstly the vibrating signal is decomposed into each frequency band based on wavelet packet(WP) analysis.Then the corresponding damage indicator is established by the WP coefficient node energy which is acted as characteristic vector of damage identification.Finally,the damage pre-warning of the transmission ... |
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| Keywords: | transmission tower wavelet packet structure damage statistic process control |
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