Attenuating resonant behavior of a tied arch railway bridge using increased hanger damping
2012 (English)In: Bridge Maintenance, Safety, Management, Resilience and Sustainability - Proceedings of the Sixth International Conference on Bridge Maintenance, Safety and Management, Taylor & Francis Group, 2012, 2572-2577 p.Conference paper (Refereed)
In this paper, dynamic analyses and field measurements of a tied arch railway bridge is presented. Excessive vibrations of the hangers were obtained, caused by resonance during train passages. The resulting increase of the stress level and number of stress cycles were shown to decrease the fatigue service life significantly. The most critical section is a threaded turnbuckle connection of the hangers. Due to low damping of the hangers, more than 50 % of the cumulative fatigue damage was related to free vibrations after train passage. Passive dampers were installed to attenuate the vibrations by means of increased damping. A combination of field measurements and numerical models are used to investigate the behavior of the bridge and the impact of increased hanger damping.
Place, publisher, year, edition, pages
Taylor & Francis Group, 2012. 2572-2577 p.
Critical sections, Cumulative fatigue damage, Fatigue service life, Field measurement, Free vibration, Passive dampers, Railway bridges, Resonant behavior, Stress cycle, Stress levels, Train passages
IdentifiersURN: urn:nbn:se:kth:diva-70136ISI: 000328502803082ScopusID: 2-s2.0-84863977096ISBN: 978-0-415-62124-3OAI: oai:DiVA.org:kth-70136DiVA: diva2:485940
6th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2012; Stresa, Lake Maggiore; Italy; 8 July 2012 through 12 July 2012
QC 201207302012-07-302012-01-302014-05-13Bibliographically approved