HHT变换在桥梁损伤诊断中的应用
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摘要
将HHT引入国道104发生严重火灾的桥梁的损伤诊断,通过对提取的响应信号进行HHT分析判定出该桥第4跨发生损伤,与实测结果相吻合,证明了该方法在桥梁健康监测方面应用的可行性,同时与FFT计算结果进行了对比,可以发现通过HHT分析后得到的Hilbert谱能够清晰的反映出结构振动能量随振动频率和时间的分布情况,而且整个过程都是自适应的,优于FFT,同时,HHT可以比FFT更清晰的判断桥梁结构动力响应的频谱特性。
The Hilbert-Huang Transform(HHT) method was introduced for damage detection of a bridge after fire accident on national trunk No.104.By analysing the extracted response signals using HHT method,it is identified that the injury occurred on the fourth span,which is in line with the measured result.It is shown that the presented method is feasible in bridge health monitoring.Compared with the calculation result of FFT method,it is shown that(1) the Hilbert spectrum from HHT method can clearly reflect the distribution of the structural vibration energy with frequency and time;(2) the whole process is adaptive and its analyzed result is better than that of FFT method;(3) HHT can determine the dynamic response spectral characteristics of the bridge structures more clearly than FFT does.
The Hilbert-Huang Transform(HHT) method was introduced for damage detection of a bridge after fire accident on national trunk No.104.By analysing the extracted response signals using HHT method,it is identified that the injury occurred on the fourth span,which is in line with the measured result.It is shown that the presented method is feasible in bridge health monitoring.Compared with the calculation result of FFT method,it is shown that(1) the Hilbert spectrum from HHT method can clearly reflect the distribution of the structural vibration energy with frequency and time;(2) the whole process is adaptive and its analyzed result is better than that of FFT method;(3) HHT can determine the dynamic response spectral characteristics of the bridge structures more clearly than FFT does.
引文
[1]尚钢,张翔,饶文碧,等.结构损伤智能识别方法[J].武汉理工大学学报,2003,25(11):83-85.SHANG Gang,ZHANG Xiang,RAO Wenbi,et al.IntelligentRecognition of Structural Damage[J].Journal of Wuhan Univer-sity of Technology,2003,25(11):83-85.
[2]L科恩.时频分析:理论与应用[M].白居宪,译.西安:西安交通大学出版社,1998.COHEN L.Time-Frequency Analysis:Theory and Applications[M].BAI Juxian,translated.Xi’an:Xi’an Jiaotong Uni-versity Press,1998.
[3]张贤达.平稳信号分析与处理[M].北京:国防工业出版社,1998.ZHANG Xianda.Stationary Signal Analysis and Processing[M].Beijing:National Defense Industry Press,1998.
[4]李建平.小波分析方法的应用[M].重庆:重庆大学出版社,1999.LI Jianping.Wavelet Analysis Method[M].Chongqing:ChongqingUniversity Press,1999.
[5]徐长发,李国宽.实用小波方法[M].武汉:华中科技大学出版社,2001.XU Changfa,LI Guokuan.Practical Wavelet Method[M].Wuhan:Huazhong University of Science and TechnologyPress,2001.
[6]HUANG N E,SHEN Z,LONG S R,et al.The EmpiricalMode Decomposition and the Hilbert Spectrum for Nonlinearand Non-stationary Time Series Analysis[J].Proceedings ofthe Royal Society of London.Series A,1998(454):903-995.
[7]张郁山.希尔伯特-黄变换(HHT)与地震动时程的希尔伯特谱-方法与应用研究[D].北京:国家地震局地球物理研究所,2003(11):30-32.ZHANG Yushan.Hilbert-Huang Transform(HHT)and theGround Motion Time of Hilbert Spectrum-study of Methods andApplication[D].Beijing:Geophysics Institute of State Seis-mological Burea.2003(11):30-32.
[8]李书进,虞晖,瞿伟廉.基于Hilbert-Huang变换的结构损伤诊断[J].武汉理工大学学报,2004,26(8):44-47.LI Shujin,YU Hui,QU Weilian.Structural Damage DiagnosisBased on Hilbert-Huang Transformation[J].Journal of WuhanUniversity of Technology,2004,26(8):44-47.
[9]熊学军,郭炳火,胡筱敏,等.EMD方法和Hilbert谱分析法的应用和探讨[J].海洋科学进展,2002(2):12-21.XIONG Xuejun,GUO Binghuo,HU Xiaomin,et al.EMD Methodand Hilbert Spectrum Analysis and Discussion on the Application[J].Advances in Marine Science,2002(2):12-21.
[10]石春香,罗奇峰.时程信号的Hilbert-Huang变换与小波分析[J].地震学报,2003,25(4):398-405.SHI Chunxiang,LUO Qifeng.Hilbert-Huang Transform and WaveletAnalysis of Signals in the Time Domain[J].Journal of the Earth-quake,2003,25(4):398-405.
[2]L科恩.时频分析:理论与应用[M].白居宪,译.西安:西安交通大学出版社,1998.COHEN L.Time-Frequency Analysis:Theory and Applications[M].BAI Juxian,translated.Xi’an:Xi’an Jiaotong Uni-versity Press,1998.
[3]张贤达.平稳信号分析与处理[M].北京:国防工业出版社,1998.ZHANG Xianda.Stationary Signal Analysis and Processing[M].Beijing:National Defense Industry Press,1998.
[4]李建平.小波分析方法的应用[M].重庆:重庆大学出版社,1999.LI Jianping.Wavelet Analysis Method[M].Chongqing:ChongqingUniversity Press,1999.
[5]徐长发,李国宽.实用小波方法[M].武汉:华中科技大学出版社,2001.XU Changfa,LI Guokuan.Practical Wavelet Method[M].Wuhan:Huazhong University of Science and TechnologyPress,2001.
[6]HUANG N E,SHEN Z,LONG S R,et al.The EmpiricalMode Decomposition and the Hilbert Spectrum for Nonlinearand Non-stationary Time Series Analysis[J].Proceedings ofthe Royal Society of London.Series A,1998(454):903-995.
[7]张郁山.希尔伯特-黄变换(HHT)与地震动时程的希尔伯特谱-方法与应用研究[D].北京:国家地震局地球物理研究所,2003(11):30-32.ZHANG Yushan.Hilbert-Huang Transform(HHT)and theGround Motion Time of Hilbert Spectrum-study of Methods andApplication[D].Beijing:Geophysics Institute of State Seis-mological Burea.2003(11):30-32.
[8]李书进,虞晖,瞿伟廉.基于Hilbert-Huang变换的结构损伤诊断[J].武汉理工大学学报,2004,26(8):44-47.LI Shujin,YU Hui,QU Weilian.Structural Damage DiagnosisBased on Hilbert-Huang Transformation[J].Journal of WuhanUniversity of Technology,2004,26(8):44-47.
[9]熊学军,郭炳火,胡筱敏,等.EMD方法和Hilbert谱分析法的应用和探讨[J].海洋科学进展,2002(2):12-21.XIONG Xuejun,GUO Binghuo,HU Xiaomin,et al.EMD Methodand Hilbert Spectrum Analysis and Discussion on the Application[J].Advances in Marine Science,2002(2):12-21.
[10]石春香,罗奇峰.时程信号的Hilbert-Huang变换与小波分析[J].地震学报,2003,25(4):398-405.SHI Chunxiang,LUO Qifeng.Hilbert-Huang Transform and WaveletAnalysis of Signals in the Time Domain[J].Journal of the Earth-quake,2003,25(4):398-405.
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