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Traffic induced vibrations on a portal frame railway bridge : Comparison of theory and measurements

The effect of different vertical support stiffness of a frame railway bridge is investigated in this study. Due to the dynamic loads of the high speed trains that run over the railway bridges, the response of these structures is far from the static effects. The frame bridge chosen for this study is the Rössjö bridge, located on the Bothnia Line, the first high speed railway built in Sweden. Using a theoretical model of this bridge, the eigenfrequencies of the structure and the vertical accelerations of the deck are evaluated. Not only different vertical support stiffness, but also different trains and train speeds are studied. Finally, some real in-situ measurements are compared with the results from the theoretical model.

Identiferoai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-36351
Date January 2011
CreatorsLlorens García, Andrea
PublisherKTH, Bro- och stålbyggnad, KTH, Järnvägsgruppen, JVG
Source SetsDiVA Archive at Upsalla University
LanguageEnglish
Detected LanguageEnglish
TypeStudent thesis, info:eu-repo/semantics/bachelorThesis, text
Formatapplication/pdf
Rightsinfo:eu-repo/semantics/openAccess
RelationTrita-BKN-Examensarbete, 1103-4297 ; 320

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