Skip to main content

Research Repository

Advanced Search

Dynamic analysis of Footbridge to Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt)

Ngekpe, Barisua Ebenezer; Gualo, Confidence; Abbey, Samuel Jonah

Dynamic analysis of Footbridge to Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt) Thumbnail


Authors

Barisua Ebenezer Ngekpe

Confidence Gualo

Profile Image

Samuel Abbey Samuel.Abbey@uwe.ac.uk
Associate Director - Engineering Practice and Management/Associate Professor



Contributors

Abstract

This research project presents a dynamic structural analysis of footbridges as per Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt). The footbridge was simulated using a commercial finite element software; Midas FEA. The crowd-footbridge is modelled as a structural oscillator to which some external load is applied. Therefore, the crowd is taken as an imposed load rather than as a dynamical system. The eigenvalue analysis was carried out to obtain the natural frequency ⍵n, which is obtained as the eigenvalue of the characteristic equation and the corresponding mode shape is obtained as the eigenvector of the characteristic equation. The values are compared to Eurocode specification for comfort criteria on footbridges. Time history analysis was also carried out. This method was used to construct time histories of variables, such as displacement and acceleration, by calculating the response at the end of a succession of very small time steps. The peak deck acceleration is obtained and compared to Eurocode specification for comfort criteria on footbridges. From the time history graph, it was observed that the maximum acceleration of the footbridge is 0.56m/s2 which is greater than the value stated in the Eurocode standard specification of 0.5m/s2 for maximum comfort. This implies that the footbridge acceleration obtained is not satisfactory and that some measures need to be taken in order to remediate this effect and control the vibrations. Some measures to reduce vibration are recommended.

Citation

Ngekpe, B. E., Gualo, C., & Abbey, S. J. (2019). Dynamic analysis of Footbridge to Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt). Jordan Journal of Civil Engineering, 13(1),

Journal Article Type Article
Acceptance Date Jan 1, 2019
Online Publication Date Jan 16, 2019
Publication Date Feb 5, 2019
Deposit Date Nov 4, 2020
Publicly Available Date Mar 28, 2024
Journal Jordan Journal of Civil Engineering
Peer Reviewed Peer Reviewed
Volume 13
Issue 1
Public URL https://uwe-repository.worktribe.com/output/3285222
Publisher URL https://jjce.just.edu.jo/issues/show_volume.php?vol=13&no=1&year=2019

Files




You might also like



Downloadable Citations