Vertical footbridge vibrations: Towards an improved and codifiable response evaluation

Einar Thór Ingólfsson, Christos Georgakis, Jeppe Jönsson, Fransesco Ricciardelli

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

An improved and codifiable footbridge response evaluation is presented herewith, in which peak vertical accelerations are provided as a function of load return period in the form of response spectra. To achieve this, a series of Monte Carlo simulations are employed to generate vertical loads induced by a "random" crowd that are subsequently used in linear timehistory analyses of the response of bridges with varying fundamental frequencies. The peak accelerations are presented as a function of return period and it is shown that the acceleration response due to a crowd is lower than $\sqrt{N}$ times the response of a single pedestrian, which is often referred to as a conservative estimate for crowds.
Original languageEnglish
Title of host publicationProceedings of the Third International Conference on Structural Engineering, Mechanics and Computation
Place of PublicationRotterdam, Netherlands
PublisherMillpress
Publication date2007
Publication statusPublished - 2007
EventSEMC 2007 : The Third International Conference on Structural Engineering, Mechanics and Computation - Cape Town, South Africa
Duration: 10 Sep 200712 Sep 2007

Conference

ConferenceSEMC 2007 : The Third International Conference on Structural Engineering, Mechanics and Computation
CountrySouth Africa
CityCape Town
Period10/09/200712/09/2007

Keywords

  • Footbridge, dynamics, pedestrian, vertical vibrations, load model, response spectrum, return period.

Cite this

Ingólfsson, E. T., Georgakis, C., Jönsson, J., & Ricciardelli, F. (2007). Vertical footbridge vibrations: Towards an improved and codifiable response evaluation. In Proceedings of the Third International Conference on Structural Engineering, Mechanics and Computation Millpress.