A Parametric Study of Pedestrian Vertical Force Models for Dynamic Analysis of Footbridges

Authors

Paul Archbold, Athlone Institute of TechnologyFollow
Joe Keogh, Technological University DublinFollow
Colin C. Caprani, Technological University DublinFollow
Paul Fanning, University College DublinFollow

Document Type

Conference Paper

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

Municipal and structural engineering

Publication Details

EVACES Conference, Italy, 3-5th October, 2011

Abstract

Footbridge vibration has received much attention in recent years. However, stochastic models for crowd loading are not common, and estimation of crowd-induced vibration is typically done through enhancement factors applied to single pedestrian loading models. This work compares two such models, a moving force model and a spring-mass-damper model (SMD). Typical ranges for various pedestrian parameters are examined, and it is found that the pacing frequency has by far the greatest influence on bridge vibration response. It is also found that the magnitude of the response for pacing frequencies near the bridge natural frequency is lower for the SMD model, but otherwise the results prove similar. This suggests that moving SMD models may be more suitable than moving force models when the bridge natural frequency is in the critical frequency range.

DOI

https://doi.org/10.21427/D79F8H

Recommended Citation

Archbold, P., Keogh, J., Caprani, C., Fanning, P.:A Parametric Study of Pedestrian Vertical Force Models for Dynamic Analysis of Footbridges. EVACES Conference, Italy, 3-5th October, 2011

Funder

ABBEST Scholarship Programme