A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving Vehicle
A damage detection method is proposed, which utilizes dynamic displacement of bridge structures under moving vehicle. The problem is first elaborated with closed-form solution of dynamic displacement, which is decomposed into quasi-static component and dynamic component. Dynamic curvature is defined...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/8454567 |
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| _version_ | 1832549133190168576 |
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| author | Zhen Sun Tomonori Nagayama Di Su Yozo Fujino |
| author_facet | Zhen Sun Tomonori Nagayama Di Su Yozo Fujino |
| author_sort | Zhen Sun |
| collection | DOAJ |
| description | A damage detection method is proposed, which utilizes dynamic displacement of bridge structures under moving vehicle. The problem is first elaborated with closed-form solution of dynamic displacement, which is decomposed into quasi-static component and dynamic component. Dynamic curvature is defined as second derivative of the dynamic displacement for detecting damage location and estimating damage extent. Damage is modeled by local reduction of stiffness in this paper. Numerical study was conducted on a simply supported beam to verify the proposed method. Vehicle model is analyzed with Newmark’s method using Matlab to obtain the contact force acting on the bridge. Beam model is established in commercial finite element software ABAQUS. The effects of road surface roughness and vehicle-bridge interaction are both considered in the analysis. In order to identify damage location and extent, dynamic curvature was calculated with midspan displacement. Parametric study on measurement noise level, damage location, damage extent, and multiple damage cases is performed, and the analysis results show both reliability and efficacy of this method in damage detection of bridge structures. At last, conclusions are drawn for its application to bridges in engineering practice. |
| format | Article |
| id | doaj-art-f3a4ee647d54443d88745d64ff9a125f |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-f3a4ee647d54443d88745d64ff9a125f2025-02-03T06:12:10ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/84545678454567A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving VehicleZhen Sun0Tomonori Nagayama1Di Su2Yozo Fujino3Department of Civil Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanDepartment of Civil Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanDepartment of Civil Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanInstitute of Advanced Sciences, Yokohama National University, 79-1 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, JapanA damage detection method is proposed, which utilizes dynamic displacement of bridge structures under moving vehicle. The problem is first elaborated with closed-form solution of dynamic displacement, which is decomposed into quasi-static component and dynamic component. Dynamic curvature is defined as second derivative of the dynamic displacement for detecting damage location and estimating damage extent. Damage is modeled by local reduction of stiffness in this paper. Numerical study was conducted on a simply supported beam to verify the proposed method. Vehicle model is analyzed with Newmark’s method using Matlab to obtain the contact force acting on the bridge. Beam model is established in commercial finite element software ABAQUS. The effects of road surface roughness and vehicle-bridge interaction are both considered in the analysis. In order to identify damage location and extent, dynamic curvature was calculated with midspan displacement. Parametric study on measurement noise level, damage location, damage extent, and multiple damage cases is performed, and the analysis results show both reliability and efficacy of this method in damage detection of bridge structures. At last, conclusions are drawn for its application to bridges in engineering practice.http://dx.doi.org/10.1155/2016/8454567 |
| spellingShingle | Zhen Sun Tomonori Nagayama Di Su Yozo Fujino A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving Vehicle Shock and Vibration |
| title | A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving Vehicle |
| title_full | A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving Vehicle |
| title_fullStr | A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving Vehicle |
| title_full_unstemmed | A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving Vehicle |
| title_short | A Damage Detection Algorithm Utilizing Dynamic Displacement of Bridge under Moving Vehicle |
| title_sort | damage detection algorithm utilizing dynamic displacement of bridge under moving vehicle |
| url | http://dx.doi.org/10.1155/2016/8454567 |
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