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Development 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.
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: Journal of Structural Engineering, ISSN 0733-9445, E-ISSN 1943-541XArticle in journal (Refereed) Submitted
Abstract [en]

This paper presents the development and testing of a bi-directional multi-passivetuned mass damper (bi-MTMD). A prototype of the damper has been built andtested under laboratory conditions. The damper was developed for application toa vertical hanger on an existing tied-arch railway bridge. During trainpassage, resonance has been observed in several hangers, resulting in areduction in the predicted fatigue service life. The objective of the damper isto mitigate the vibrations to reduce the resulting stresses and consequently toextend the life of the hanger. The hanger has different natural frequencies forlongitudinal and transversal bending. In addition, a significant difference innatural frequency is obtained for the loaded and unloaded bridge, due to theincrease in axial force in the hangers. The developed damper accounts for bothscenarios and is tuned based on previous field measurements. The results fromthe laboratory experiments are compared with a 3D FE-model of the damper.

Keyword [en]
Tuned mass damper, Bi-directional damper, experimental testing, frequency response function, railway bridge
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-120212OAI: oai:DiVA.org:kth-120212DiVA: diva2:613950
Projects
Long Life Bridges
Funder
EU, FP7, Seventh Framework Programme, 286276
Note

QS 2013

Available from: 2013-04-02 Created: 2013-04-02 Last updated: 2017-12-06Bibliographically approved

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Andersson, AndreasKaroumi, Raid

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