Passive and Adaptive Damping Systems for Vibration Mitigation and Increased Fatigue Service Life of a Tied Arch Railway Bridge
2015 (English)In: Journal of Bridge Engineering, ISSN 1084-0702, Vol. 30, no 9, 748-757 p.Article in journal (Refereed) Published
n this article, the use of external damping systems for vibration mitigation of railway bridge dynamics is studied. For a presented case study bridge, the performance of different tuned mass damper systems (TMDs) is studied. During train passage, the change in dynamic characteristics of the bridge may produce a significant detune to a passive TMD. Therefore, routines for a variable stiffness TMD using incremental frequency estimates are developed. Based on numerical simulations, the cumulative fatigue damage is calculated for different damper systems. Due to resonant behavior, the results are found to highly depend on the train speed. Based on an assumed probability density function for the train speed, fragility curves are produced to express the probability of fatigue failure as a function of the number of train passages.
Place, publisher, year, edition, pages
2015. Vol. 30, no 9, 748-757 p.
Railway bridge dynamics, tuned mass damper, adaptive control, finite element method, fatigue, fragility curve
IdentifiersURN: urn:nbn:se:kth:diva-120211DOI: 10.1111/mice.12116ISI: 000358692800006ScopusID: 2-s2.0-84937976409OAI: oai:DiVA.org:kth-120211DiVA: diva2:613948
ProjectsLong Life Bridges
FunderEU, FP7, Seventh Framework Programme, 286276
Updated from "Submitted" to "Published". QC 201509012013-04-022013-04-022015-09-01Bibliographically approved