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Considering dynamic soil-structure interaction in design of high-speed railway bridges
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. Tyréns AB, Sweden.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. Tyréns AB, Sweden.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. Swedish Transport Administration, Sweden.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
2017 (English)In: X International Conference on Structural Dynamics, EURODYN 2017, Elsevier, 2017, Vol. 199, p. 2384-2389Conference paper, Published paper (Refereed)
Abstract [en]

This article presents preliminary theoretical results on the influence of dynamic soil-structure interaction (SSI) of slab foundations. Impedance functions, representing the dynamic SSI, were obtained from FE-models depicting the soil for a few cases of different geotechnical preconditions. The obtained impedance functions were attached to single-span bridges and HSLM-A analyses were performed. The effect of the impedance functions on the bridge response was studied and compared to the ultimate case of a bridge on rigid supports. The influence of SSI seems to have a significant effect on railway bridges. This study shows that by including this effect in bridge design, the damping ratio of the system is largely increased, giving lower acceleration amplitudes in the bridge, while the natural frequencies are less affected.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 199, p. 2384-2389
Series
Procedia Engineering, ISSN 1877-7058 ; 199
Keywords [en]
Bridge Dynamics, High-Speed Railway, Impedance, Soil-Structure Interaction
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-215898DOI: 10.1016/j.proeng.2017.09.264ISI: 000422868902088Scopus ID: 2-s2.0-85029902247OAI: oai:DiVA.org:kth-215898DiVA, id: diva2:1150236
Conference
10th International Conference on Structural Dynamics, EURODYN 2017, Faculty of Civil and Industrial Engineering, Rome, Italy, 10 September 2017 through 13 September 2017
Note

QC 20171018

Available from: 2017-10-18 Created: 2017-10-18 Last updated: 2018-02-22Bibliographically approved

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Östlund, JohanÜlker-Kaustell, MahirAndersson, AndreasBattini, Jean Marc
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