The non-stationarity of apparent bridge natural frequencies during vehicle crossing events

Files in This Item:
File Description SizeFormat 
J73_-_rep_vers.pdf445.13 kBAdobe PDFDownload
Title: The non-stationarity of apparent bridge natural frequencies during vehicle crossing events
Authors: Cantero, Daniel
O'Brien, Eugene J.
Permanent link:
Date: Dec-2013
Online since: 2015-09-22T10:08:11Z
Abstract: In this paper, it is shown numerically how the natural frequencies of a bridge change during the crossing of a vehicle. An Euler-Bernoulli beam is modelled traversed by a single DOF vehicle. The use of such a simple Vehicle-Bridge interaction model is justified by the objective of providing insight into the structural dynamics of a moving load interacting with a bridge. The numerical results indicate that the variations in natural frequencies depend greatly on vehicle-to-structure frequency ratio and mass ratio. In some conditions, significant variations in modal properties are observed. Additionally, it can be analysed from the passing vehicle response. Time-frequency signal analysis of the vehicle's vertical acceleration clearly shows how the frequencies evolve during the event. The frequency localization properties of the Wavelet transform (Modified Littlewood-Paley) are exploited in analysing the signal and highlighting the relevant results.
Funding Details: European Commission - Seventh Framework Programme (FP7)
Type of material: Journal Article
Publisher: Faculty of Mechanical Engineering
Journal: FME Transactions
Volume: 41
Issue: 4
Start page: 279
End page: 284
Copyright (published version): 2013 Faculty of Mechanical Engineering, Belgrade
Keywords: BridgeNatural frequencyWaveletDynamicsVibrationNon-stationaryVehicle
Other versions:
Language: en
Status of Item: Peer reviewed
Appears in Collections:Civil Engineering Research Collection

Show full item record

Download(s) 50

checked on May 25, 2018

Google ScholarTM


This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.