[1]刘景良,彭佳敏,方露,等.采用VMD和归一化峭度的钢管混凝土柱内部脱空缺陷识别方法[J].华侨大学学报(自然科学版),2023,44(3):328-335.[doi:10.11830/ISSN.1000-5013.202210006]
 LIU Jingliang,PENG Jiamin,FANG Lu,et al.Cavity Defect Detection Method for Concrete-Filled Steel Tubular Column Using VMD and Normalized Kurtosis[J].Journal of Huaqiao University(Natural Science),2023,44(3):328-335.[doi:10.11830/ISSN.1000-5013.202210006]
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采用VMD和归一化峭度的钢管混凝土柱内部脱空缺陷识别方法()
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《华侨大学学报(自然科学版)》[ISSN:1000-5013/CN:35-1079/N]

卷:
第44卷
期数:
2023年第3期
页码:
328-335
栏目:
出版日期:
2023-05-12

文章信息/Info

Title:
Cavity Defect Detection Method for Concrete-Filled Steel Tubular Column Using VMD and Normalized Kurtosis
文章编号:
1000-5013(2023)03-0328-08
作者:
刘景良1 彭佳敏1 方露1 姜洋2 蔡宏爽1 张羲岭3
1. 福建农林大学 交通与土木工程学院, 福建 福州 350108;2. 福建农业职业技术学院 园艺园林学院, 福建 福州 350303;3. 福建省国电调试院有限公司, 福建 福州 350025
Author(s):
LIU Jingliang1 PENG Jiamin1 FANG Lu1 JIANG Yang2 CAI Hongshuang1 ZHANG Xiling3
1. College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China; 2. College of Horticulture and Landscape Architecture, Fujian Vocational College of Agriculture, Fuzhou 350303, China; 3. Fujian Guodian Commissioning Institute Limited Company, Fuzhou 350025, China
关键词:
钢管混凝土柱 脱空缺陷 变分模态分解 峭度 缺陷识别
Keywords:
concrete-filled steel tubular column cavity defect variational mode decomposition kurtosis defect detection
分类号:
TU311.3;TU392.3
DOI:
10.11830/ISSN.1000-5013.202210006
文献标志码:
A
摘要:
提出一种基于变分模态分解(VMD)与归一化峭度的钢管混凝土柱内部脱空缺陷识别方法.首先,采用VMD分解响应信号;然后,选取加权峭度值大于平均值的模态分量作为有效分量并进行信号重构;对重构后的信号求取Teager能量算子(TEO)并进行快速傅里叶变换(FFT);最后,对经FFT处理的TEO值进行归一化峭度求解.通过数值算例和动力试验对文中方法的有效性和准确性进行验证.研究结果表明:文中方法对钢管混凝土柱内部损伤位置的识别效果较好,且不依赖于原始未损工况的基准信息.
Abstract:
A cavity defect detection method is proposed for concrete-filled steel tubular columns(CFSTC)based on variational mode decomposition(VMD)and kurtosis. VMD is used to decompose response signals. The modal components whose weighted kurtosis are larger than mean value are selected as the effective components and used to reconstruct signals. The reconstructed signal is processed by Teager’s energy operator(TEO), and the fast Fourier transform(FFT)is carried out. The values of TEO processed by FFT are used to calculate the normalized kurtosis. The effectiveness and accuracy of this method are verified by a numerical case and a dynamic test. The research results show that this method is effective in identifying the internal damage location of CFSTC, and does not depend on the reference information of the original undamaged condition.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2022-10-13
通信作者: 刘景良(1983-),男,副教授,博士,主要从事桥梁结构健康监测的研究.E-mail:liujingliang@fafu.edu.cn.
基金项目: 国家自然科学基金青年基金资助项目(51608122); 福建省自然科学基金面上资助项目(2020J01581)
更新日期/Last Update: 2023-05-20