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Evaluation of load model for crowd-induced vibrations of footbridges
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. KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group.ORCID iD: 0000-0002-5447-2068
KTH. Tyréns AB, Stockholm, Sweden.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. Swedish Transport Administration, Solna, Sweden.ORCID iD: 0000-0002-8926-2140
2016 (English)In: IABSE Congress Stockholm, 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, International Association for Bridge and Structural Engineering (IABSE) , 2016, p. 65-72Conference paper, Published paper (Refereed)
Abstract [en]

Due to a trend in designing light and slender structures, many modern footbridges are prone to excessive vibrations. Severely vibrating footbridges can give rise to discomfort for the pedestrians. Therefore, during the last decades, pedestrian-induced vibrations of footbridges have become a subject of great interest. In this study, the performance of a coupled crowd-structure model, where the bridge is described using its first two modes of vibrations and each pedestrian is described as a moving mass-spring-damper system, in combination with a walking load, is evaluated. The model is used to estimate vertical deck accelerations of a real footbridge which is known to be susceptible to vibrations, and the results are then compared to measurements. The model performs satisfactory in the time domain, but poorly in the frequency domain, which is concluded to be mainly due to discrepancies in the simulated load compared to the measured load.

Place, publisher, year, edition, pages
International Association for Bridge and Structural Engineering (IABSE) , 2016. p. 65-72
Keywords [en]
Footbridge, Load model, Pedestrian-induced vibrations, Walking load, Footbridges, Frequency domain analysis, Sustainable development, Vibrations (mechanical), Frequency domains, Induced vibrations, Load modeling, Measured loads, Slender structures, Structure modeling, Walking loads, Structural design
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-216887Scopus ID: 2-s2.0-85019004700ISBN: 9783857481444 OAI: oai:DiVA.org:kth-216887DiVA, id: diva2:1153602
Conference
19th IABSE Congress Stockholm 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, 21 September 2016 through 23 September 2016
Note

Conference code: 127207; Export Date: 24 October 2017; Conference Paper; Correspondence Address: Zäll, E.; KTH Royal Institute of TechnologySweden; email: ezall@kth.se. QC 20171031

Available from: 2017-10-31 Created: 2017-10-31 Last updated: 2018-05-24Bibliographically approved

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Karoumi, RaidAndersson, Andreas

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