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The validity of simplified dynamic analysis of the new årsta bridge response to moving trains
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
2010 (English)In: Proceedings of the Tenth International Conference on Computational Structures Technology, 2010, Vol. 93Conference paper (Refereed)
Abstract [en]

Dynamic simulations are necessary to predict the behaviour of bridges loaded by high-speed trains. These simulations are expensive, require a lot of computational power and are very sensitive to input parameters that are difficult to estimate. If the dynamic behaviour of the bridge could be accurately predicted by simpler models, time and resources could be saved. In this paper, a 2D finite element model of a complex bridge is developed. The results obtained are compared with those obtained by other more complex 3D models as well as with the actual response of the bridge measured in situ by a long term monitoring system. Furthermore, based on the measured results, some model parameters are updated. The main aim of this study is to check the validity of simplified models and simplified analysis of the response of complex bridges to moving trains, as well as the capabilities of updating in enhancing the model accuracy.

Place, publisher, year, edition, pages
2010. Vol. 93
, Civil-Comp Proceedings, ISSN 1759-3433 ; 93
Keyword [en]
Dynamic simulation, Finite element method, Model updating, Monitoring, Railway bridge, Vehicle-bridge interaction
National Category
Infrastructure Engineering
URN: urn:nbn:se:kth:diva-148893ScopusID: 2-s2.0-84893852825ISBN: 978-190508838-6OAI: diva2:738320
10th International Conference on Computational Structures Technology, CST 2010; Valencia; Spain; 14 September 2010 through 17 September 2010

QC 20140818

Available from: 2014-08-18 Created: 2014-08-14 Last updated: 2014-08-18Bibliographically approved

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González, Ignacio
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