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Vibration mitigation of railway bridges using adaptive damping control
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-8926-2140
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-5447-2068
(Trinity College Dublin)
2013 (English)In: Assessment, Upgrading and Refurbishment of Infrastructures, 2013Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, the advantage of an adaptive damping system is presented. A damper with variable stiffness is tuned based on estimates of the real-time frequency response, facilitating optimal vibration mitigation. The performance of the developed routines is investigated on an existing tied arch railway bridge. Based on previous field measurements, resonant behaviour of several hangers was found. In combination with low structural damping, the induced stresses resulted in a reduced fatigue service life. Passive dampers are currently installed on the longer hangers, each tuned to the fundamental natural frequency of the individual hanger. However, increased axial force during train passage results in a significant variation in natural frequency, with an apparent risk of detuning the passive dampers. The predicted performance of an adaptive damping system to account for this variation in dynamic behaviour is presented and its potential application is discussed.

Place, publisher, year, edition, pages
2013.
Keyword [en]
Railway bridge dynamics; tuned mass damper; adaptive control; finite element method.
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-103065OAI: oai:DiVA.org:kth-103065DiVA: diva2:558310
Conference
International IABSE Conference, Rotterdam May 6 - 8, 2013
Projects
Long Life Bridges
Funder
EU, FP7, Seventh Framework Programme, 286276
Note

QC 20130507

Available from: 2013-05-07 Created: 2012-10-02 Last updated: 2013-10-04Bibliographically approved

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fulltext(535 kB)771 downloads
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Andersson, AndreasKaroumi, Raid

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • de-DE
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  • Other locale
More languages
Output format
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