# 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 language English Proceedings of the Third International Conference on Structural Engineering, Mechanics and Computation Rotterdam, Netherlands Millpress 2007 Published - 2007 SEMC 2007 : The Third International Conference on Structural Engineering, Mechanics and Computation - Cape Town, South AfricaDuration: 10 Sep 2007 → 12 Sep 2007

### Conference

Conference SEMC 2007 : The Third International Conference on Structural Engineering, Mechanics and Computation South Africa Cape Town 10/09/2007 → 12/09/2007

## Keywords

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

## Fingerprint

Dive into the research topics of 'Vertical footbridge vibrations: Towards an improved and codifiable response evaluation'. Together they form a unique fingerprint.