The impact of vertical human-structure interaction on the response of footbridges to pedestrian excitation

In the present paper, a detailed crowd model is applied to investigate the impact of vertical human-structure interaction (HSI) on the dynamic response of footbridges to pedestrian excitation. Assuming that the walking behaviour of the pedestrian is not affected by the motion of the supporting struc...

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Bibliographic Details
Published in:Journal of sound and vibration 2017-08, Vol.402, p.104-121
Main Authors: Van Nimmen, K., Lombaert, G., De Roeck, G., Van den Broeck, P.
Format: Article
Language:English
Subjects:
Contact force
Damping
Damping ratio
Dynamic response
Excitation
Footbridge
Full-scale testing
Human behavior
Human-induced vibrations
Human-structure interaction
Impact analysis
Influence
Pedestrian bridges
Random pedestrian traffic
Studies
Vibration serviceability
Walking
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Summary:In the present paper, a detailed crowd model is applied to investigate the impact of vertical human-structure interaction (HSI) on the dynamic response of footbridges to pedestrian excitation. Assuming that the walking behaviour of the pedestrian is not affected by the motion of the supporting structure, the contact force between the pedestrian and the supporting structure is decomposed into the force exerted by the pedestrian on a perfectly rigid floor and an interaction term determined by the mechanical interaction between the person and the structure. The model is also used to evaluate the impact of various simplifying assumptions and inter- and intra-person variabilities. The results show that for the low-frequency dynamic behaviour of footbridges (
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2017.05.017