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Subspace-based damage detection methods on a prestressed concrete bridge

  • For the last decades vibration based damage detection of engineering structures has become an important issue for maintenance operations on transport infrastructure. Research in vibration based structural damage detection has been rapidly expanding from classic modal parameter estimation to modern operational monitoring. Methodologies from control Engineering especially of aerospace applications have been adopted and converted for the application on civil structures. Here the difficulty is to regard to the specific environmental and operational influence to the structure under observation. A null space based damage detection algorithm is tested for its sensitivity to structural damage of a prestressed concrete road bridge. Specific techniques and extensions of the algorithm are used to overcome difficulties from the size of the structure which is associated with the number of recorded sensor channels as well as from the operational disturbances by a nearby construction site. It can beFor the last decades vibration based damage detection of engineering structures has become an important issue for maintenance operations on transport infrastructure. Research in vibration based structural damage detection has been rapidly expanding from classic modal parameter estimation to modern operational monitoring. Methodologies from control Engineering especially of aerospace applications have been adopted and converted for the application on civil structures. Here the difficulty is to regard to the specific environmental and operational influence to the structure under observation. A null space based damage detection algorithm is tested for its sensitivity to structural damage of a prestressed concrete road bridge. Specific techniques and extensions of the algorithm are used to overcome difficulties from the size of the structure which is associated with the number of recorded sensor channels as well as from the operational disturbances by a nearby construction site. It can be shown that for concrete bridges the proposed damage detection methodology is able to clearly indicate the presence of structural damage, if the damage leads to a significant change of the structural system. Small damage which do not result in a System change when not activated by loading, do not lead to a modification of the dynamic response behavior and for that cannot be detected with the proposed global monitoring method.zeige mehrzeige weniger

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Metadaten
Autor*innen:Falk Hille, M. Döhler, L. Mevel, Werner Rücker
Persönliche Herausgeber*innen:G. De Roeck, G. Degrande, G. Lombaert, G. Müller
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):EURODYN 2011 - 8th International conference on structural dynamics (Proceedings)
Jahr der Erstveröffentlichung:2011
Herausgeber (Institution):Katholieke Universiteit Leuven
Ausgabe/Heft:MS12 TUE 11:45
Erste Seite:2304
Letzte Seite:2310
Freie Schlagwörter:Concrete bridge; Fault detection; Monitoring techniques; Subspace methods
Veranstaltung:EURODYN 2011 - 8th International conference on structural dynamics
Veranstaltungsort:Leuven, Belgium
Beginndatum der Veranstaltung:04.07.2011
Enddatum der Veranstaltung:06.07.2011
ISBN:978-90-760-1931-4
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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