Assessment and optimisation of bridge transition zones on the basis of a numerical model for train-track-bridge interaction
- The main degradation process at bridge transition zones due to traffic loads is the appearance of differential settlements. Abrupt stiffness changes, repeating traffic loads and relative displacements of the superstructure ends on bridges often aggravate this problem. In this contribution, a 3D finite element (FE) model extended with a boundary formulation in the frame of the scaled-boundary finite element method (SBFEM) for a transient analysis of train-track-bridge interaction is presented. This numerical model permits an assessment of bridge transition zone with respect to permanent deformations of the track. The main focus lies on the modeling strategies for the vehicle and their impact on suitable assessment criteria for bridge transition zones. For this purpose, two different modeling strategies for the vehicle, a moving load model and a multibody model, have been compared and discussed on the basis of the assessment criteria. The results indicate that the model of the vehicleThe main degradation process at bridge transition zones due to traffic loads is the appearance of differential settlements. Abrupt stiffness changes, repeating traffic loads and relative displacements of the superstructure ends on bridges often aggravate this problem. In this contribution, a 3D finite element (FE) model extended with a boundary formulation in the frame of the scaled-boundary finite element method (SBFEM) for a transient analysis of train-track-bridge interaction is presented. This numerical model permits an assessment of bridge transition zone with respect to permanent deformations of the track. The main focus lies on the modeling strategies for the vehicle and their impact on suitable assessment criteria for bridge transition zones. For this purpose, two different modeling strategies for the vehicle, a moving load model and a multibody model, have been compared and discussed on the basis of the assessment criteria. The results indicate that the model of the vehicle has a minor effect for an assessment on the embankment, but that the assessment on the bridge may show significant differences depending on whether the inertial components of the vehicle (multibody model) are considered.…
Autor*innen: | Jeffrey Bronsert, Matthias BaeßlerORCiD, Pablo Cuéllar, Werner Rücker |
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Persönliche Herausgeber*innen: | A. Cunha, E. Caetano, P. Ribeiro, G. Müller |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | EURODYN 2014 - 9th International conference on structural dynamics (Proceedings) |
Jahr der Erstveröffentlichung: | 2014 |
Erste Seite: | 799 |
Letzte Seite: | 804 |
Freie Schlagwörter: | Assessment criteria; Bridge transition zone; Numerical model; Train-track-bridge-interaction; Vehicle model |
Veranstaltung: | EURODYN 2014 - 9th International conference on structural dynamics |
Veranstaltungsort: | Porto, Portugal |
Beginndatum der Veranstaltung: | 30.06.2014 |
Enddatum der Veranstaltung: | 02.07.2014 |
ISSN: | 2311-9020 |
ISBN: | 978-972-752-165-4 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 11.08.2014 |