Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Vibration serviceability of all-GFRP cable-stayed footbridge under various service excitations
Ist Teil von
Measurement : journal of the International Measurement Confederation, 2021-10, Vol.183, p.109822, Article 109822
Ort / Verlag
London: Elsevier Ltd
Erscheinungsjahr
2021
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
•A human jump on the footbridge deck was enough to excite and identify 7 modes.•The fundamental frequency was within the critical range of resonance.•The vibration serviceability of all-GFRP cable-stayed footbridge was examined.•The events included human-, cyclist- and train-buffeting-induced excitations.•The vibration comfort of the examined footbridge is met to a limited range.
The paper presents a study on a vibration serviceability assessment of the cable-stayed Fiberline Bridge made entirely of Glass Fiber Reinforced Polymer (GFRP) based on ambient vibration tests. In situ monitoring in the vertical direction included modal identification and vibration tests under various specific dynamic excitations (21 events) such as human-induced activities, scooter-induced excitations and aerodynamic buffeting effects induced by trains passing under the footbridge. A total of 7 natural frequencies ranging up to 21 Hz, corresponding mode shapes and damping ratios of the footbridge were identified. It was found that the footbridge meets the minimum comfort level in accordance with the Sétra rules for most of the considered events. More restrictive acceleration limits suggested by Eurocode 0 were not met for these events. The obtained results provided relevant data for structural health monitoring of other all-GFRP footbridges with a similar structural system exposed to similar excitation conditions.