Evaluation of the effect of operational modal analysis algorithms on identified modal parameters of railway bridges
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Bibliografische Angaben
| Autor(en): |
Mohammadreza Salehi
(Dept. of Civil Eng. And Energy Technology, Oslo Metropolitan University, Oslo, Norway)
Kultigin Demirlioglu (Dept. of Civil Eng. And Energy Technology, Oslo Metropolitan University, Oslo, Norway) Emrah Erduran (Dept. of Civil Eng. And Energy Technology, Oslo Metropolitan University, Oslo, Norway) |
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| Medium: | Tagungsbeitrag | ||||
| Sprache(n): | Englisch | ||||
| Tagung: | IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021 | ||||
| Veröffentlicht in: | IABSE Congress Ghent 2021 | ||||
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| Seite(n): | 441-449 | ||||
| Anzahl der Seiten (im PDF): | 9 | ||||
| DOI: | 10.2749/ghent.2021.0441 | ||||
| Abstrakt: |
The accuracy of modal parameters identified by Operational Modal Analysis (OMA) algorithms is of vital importance in vibration-based health monitoring. This paper reports the effects of using different OMA algorithms on identified modal parameters of railway bridges. For this purpose, comparison and application of three different OMA methods including FDD, ARX, SSI-COV are discussed. The vibration measurements are conducted on two railway bridges in Northern Norway for using five triaxial accelerometers. The first bridge is a single-span bridge with the length of 50 m, while the second is a two-span bridge with a total length of 85m. OMA has been conducted on the free vibration responses after passage of different types of trains including light-weight railway vehicles and heavily loaded iron ore trains to evaluate the variation of the identified modal parameters with the chosen algorithm and the vibration source on the OMA results. |
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| Copyright: | © 2021 International Association for Bridge and Structural Engineering (IABSE) | ||||
| Lizenz: | Die Urheberrechte (Copyright) für dieses Werk sind rechtlich geschützt. Es darf nicht ohne die Zustimmung des Autors/der Autorin oder Rechteinhabers/-in weiter benutzt werden. |
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