Probabilistic criteria for lateral dynamic stability of bridges under crowd loading

M. Bocian*, J. H. G. Macdonald, J. F. Burn

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

17 Citations (Scopus)

Abstract

Probabilistic conditions for lateral stability of bridges are proposed, based on output from the inverted pendulum pedestrian model from the field of biomechanics. Statistical variations of the parameters defining the model are studied based on real statistical data of the English population. Variability of the self-excited forces is quantified for crowds of different velocities and critical conditions are identified for bridge natural frequencies below 5 Hz. Allowance is made for the influence of the bridge mode shape and number of pedestrians in the crowd and their spatial distribution. This allows realistic worst case conditions among different loading scenarios for a particular structure to be found. (C) 2014 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)108-119
Number of pages12
JournalComputers and Structures
Volume136
DOIs
Publication statusPublished - May 2014

Keywords

  • Bridges
  • Human-structure interaction
  • Biomechanics
  • Inverted pendulum model
  • Lateral vibrations
  • Dynamic instability
  • INDUCED VIBRATION
  • FOOTBRIDGES
  • EXCITATION
  • WALKING
  • BALANCE
  • FORCES
  • MODEL

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