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Evaluation of the dynamic response of a soil-steel composite railway bridge
Uppsala University, division of Construction Engineering.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. (Bro- och stålbyggnad)ORCID iD: 0000-0002-5447-2068
2012 (English)In: Archives of Institute of Civil Engineering, 2012Conference paper (Refereed)
Abstract [en]

The dynamic response of a long-span arch soil-steel composite railway bridge is studied. The bridge has a span of 11 m and a rise of 4.3 m. Strains, displacements and vertical ballast accelerations were measured during passages of a locomotive at different speeds. The results indicate that the speed of the locomotive has a large influence on the displacements, thrusts and moments. The structure was found to be safe when measured values of moments and thrusts were compared with the live load calculations according to design codes. However, dynamic amplification factors as high as 1.45 were obtained for the moments at the quarter point and this is found to be much greater than the values specified in bridge design codes. Despite this, due to the high damping involved, bridges of this kind are believed to be less sensitive to resonance problems from passing trains.

Place, publisher, year, edition, pages
National Category
Civil Engineering
URN: urn:nbn:se:kth:diva-93808OAI: diva2:524107
2nd European Conference on Buried Flexible Steel Structures
Available from: 2012-04-27 Created: 2012-04-27 Last updated: 2012-12-12Bibliographically approved

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Karoumi, Raid
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