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Dynamic behaviour of a short span soil-steel composite bridge for high-speed railways - field measurements and FE-analysis
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.
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.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-5447-2068
2014 (English)In: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 69, 49-61 p.Article in journal (Refereed) Published
Abstract [en]

The dynamic response from passing trains at high speed is studied for a short span soil-steel composite bridge. Field measurements have been performed, comprising steel strains, vertical crown displacements and accelerations in the steel and the backfill. Soil material damping properties are estimated through analysis of the field measurements. Approaches for numerical modelling are presented, focusing on the dynamic response from passing trains. Both 2D and 3D continuum models are compared with the measured response. Based on the models, the influence of the Young’s modulus of the backfill on the bridge behaviour is investigated. The 3D-model also enables estimation of the load distribution, which is found to increase at higher train speeds. An effective width to be used in 2D analyses is proposed. A dynamic design check using the high-speed train load models in the Eurocode is presented, that for the studied bridge envisage a resonance peak at about 320 km/h.

Place, publisher, year, edition, pages
2014. Vol. 69, 49-61 p.
Keyword [en]
Soil-steel composite bridge, High-speed train, Structural dynamics, Acceleration, Field measurements, Finite element model
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-129310DOI: 10.1016/j.engstruct.2014.03.004ISI: 000336780100005Scopus ID: 2-s2.0-84897516298OAI: oai:DiVA.org:kth-129310DiVA: diva2:651427
Note

QC 20140702

Available from: 2013-09-25 Created: 2013-09-25 Last updated: 2017-12-06Bibliographically approved

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Andersson, AndreasKaroumi, Raid

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  • apa
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