Vibration-based structural health monitoring of a highway bridge based on continuous dynamic measurements during 14 years
- This paper presents the continuous dynamic measurements of an aging prestressed box-beam bridge during the period from 2000 to 2013, which consists of dynamic properties and environmental/operational factors, as well as the Variation of the extracted health features after removing the environmental/operational effects. Firstly, the variations of frequency estimates, temperatures and traffic loads from 2000 to 2013 are described. Subsequently, correlation analysis between them indicates the nonlinear influences of the temperature on the frequency estimates. The Multiple Linear Regression (MLR) method is used to remove the environmental/operational effects and the health index is proposed by performing the Novelty Detection analysis of the residual errors. Finally, the variations of the health index may indicate clear structural modifications that can be also characterized by the long term monitoring of the dynamic strain in the prestressed cable.
Autor*innen: | Wei-Hua Hu, Samir Said, Rolf Rohrmann, Werner Rücker, A. Cunha, Andreas Rogge |
---|---|
Persönliche Herausgeber*innen: | A. De Stefano |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | SHMII-7 - 7th International conference on structural health monitoring of intelligent infrastructure (Proceedings) |
Jahr der Erstveröffentlichung: | 2015 |
Herausgeber (Institution): | International Society for Structural Health Monitoring of Intelligent Infrastructure (ISHMII) |
Erste Seite: | 1 |
Letzte Seite: | 12 |
Freie Schlagwörter: | Westend bridge |
Veranstaltung: | SHMII-7 - 7th International conference on structural health monitoring of intelligent infrastructure |
Veranstaltungsort: | Torino, Italy |
Beginndatum der Veranstaltung: | 01.07.2015 |
Enddatum der Veranstaltung: | 03.07.2015 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |