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Development and testing of a bi-directional multi-passive tuned mass damper
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-8926-2140
Trinity College Dublin. (Department of Civil, Structural and Environmental Engineering)
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-5447-2068
(English)In: Computer-Aided Civil and Infrastructure Engineering, ISSN 1093-9687, E-ISSN 1467-8667Article in journal (Other academic) Submitted
Abstract [en]

This paper presentsthe development and testing of a bi-directional multi-passive tuned mass damper(bi-MTMD). A prototype of the damper has been built and tested under laboratoryconditions. The damper was developed for application to a vertical hanger on anexisting tied-arch railway bridge. During train passage, resonance has beenobserved in several hangers, resulting in a reduction in the predicted fatigueservice life. The objective of the damper is to mitigate the vibrations toreduce the resulting stresses and consequently to extend the life of thehanger. The hanger has different natural frequencies for longitudinal andtransversal bending. In addition, a significant difference in natural frequencyis obtained for the loaded and unloaded bridge, due to the increase in axialforce in the hangers. The developed damper accounts for both scenarios and istuned based on previous field measurements. The results from the laboratoryexperiments are compared with a 3D FE-model of the damper.

Keyword [en]
Tuned mass damper, bi-directional damper, experimental testing, frequency response function, finite element analysis, railway bridge
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-109488OAI: oai:DiVA.org:kth-109488DiVA: diva2:582609
Projects
Long Life Bridges
Funder
EU, FP7, Seventh Framework Programme, IAPP-GA-2011-286276
Note

QS 2015

Available from: 2013-01-05 Created: 2013-01-05 Last updated: 2017-12-06Bibliographically approved

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Andersson, AndreasKaroumi, Raid

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  • Other locale
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