| A METHOD OF ONLINE DAMAGE IDENTIFICATION FOR STRUCTURES BASED ON AMBIENT VIBRATION |
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| 作者姓名： | 姚志远 汪凤泉 赵淳生 |
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| 作者单位： | Research Center of Ultrasonic Motors，Nanjing University of Astronautics and Aeronautics，Nanjing 210016，P.R.China，Department of Engineering Mechanics，Southeast University，Nanjing 210096，P.R.China，Research Center of Ultrasonic Motors，Nanjing University of Astronautics and Aeronautics，Nanjing 210016，P.R.China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina ( 597750 2 2 ) |
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| 摘 要： | IntroductionStructuralhealthmonitoringofbridgesandarchitectureshasbeenhighlyinteresting .Whensomebridgesarebuilt,thehealthmonitoringsystemsareinstalled ,whicharemadeupofmanysensors,suchaswindloadingsensors,stresssensorsandaccelerationsensors.Thesesensorscollectagreatdealofinformation .Howtheinformationisusedtoestimatethedamageofbridgestructureandanalyzethedurabilityofbridgestructureisasignificantresearchproblem .Existenceofstructuraldamageswithinstructuresleadstothechangesuchasthevibrationres…
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| 关 键 词： | 损伤鉴别 参数设置 在线识别 状态监视 建筑工程 结构稳定 |
| 收稿时间： | 29 April 2003 |
A method of online damage identification for structures based on ambient vibration |
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| Yao Zhi-yuan,Wang Feng-quan,Zhao Chun-sheng.A METHOD OF ONLINE DAMAGE IDENTIFICATION FOR STRUCTURES BASED ON AMBIENT VIBRATION[J].Applied Mathematics and Mechanics(English Edition),2005,26(2):269-276. |
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| Authors: | Yao Zhi-yuan Wang Feng-quan Zhao Chun-sheng |
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| Institution: | 1. Research Center of Ultrasonic Motors, Nanjing University of Astronautics and Aeronautics,Nanjing 210016, P.R. China
2. Department of Engineering Mechanics, Southeast University,Nanjing 210096, P.R. China |
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| Abstract: | A method of damage identification for engineering structures based on ambient vibration is put forward, in which output data are used only. Firstly, it was identification of the statistic parameters to associate with the exterior excitation for undamaged structures. Then it was detection and location of the structural damages for damaged structures. The ambient identification method includes a theoretical model and numerical method. The numerical experiment results show the method is precise and effective. This method may be used in health monitoring for bridges and architectures. |
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| Keywords: | damage identification parameter identification online identification technique health monitoring technique |
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