Damage Identification on an Iron Bridge Based on Spectral Analysis
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Bibliographic Details
| Author(s): |
Alexander Tributsch
Christoph Adam Maximilian Billmaier |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013 | ||||
| Published in: | IABSE Conference, Rotterdam, May 2013 | ||||
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| Page(s): | 146-147 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2013 | ||||
| DOI: | 10.2749/222137813806474624 | ||||
| Abstract: |
This paper reports about damage identification on a single-span iron bridge based on recorded ambient vibrations. Several local damage scenarios were imposed stepwise to the structure. Random vibration tests were conducted, and the induced dynamic response of the bridge in the undisturbed as well as in modified “damaged” conditions was recorded. The recorded vibrations were subjected to Operational Modal Analysis identification methods and to spectral analyses. It is shown that the shift of the relative cumulative spectral energy at different damage levels is an appropriate damage indicator. Thus, spectral analysis could be a promising tool for long-term vibration based structural health monitoring. |
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| Keywords: |
railroad bridge rail bridge structural health monitoring damage detection Ambient response spectral analysis
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