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  5. The Virtual Axle concept for detection of localised damage using Bridge Weigh-in-Motion data
 
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The Virtual Axle concept for detection of localised damage using Bridge Weigh-in-Motion data

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Author(s)
Cantero, Daniel 
Karoumi, Raid 
González, Arturo 
Uri
http://hdl.handle.net/10197/6797
Date Issued
15 April 2015
Date Available
15T01:00:11Z April 2017
Abstract
This paper proposes a new level I damage identification method for short span statically indeterminate bridges using the information provided by a Bridge Weigh-in-Motion system. Bridge Weigh-In-Motion systems measure the bridge deformation due to the crossing of traffic to estimate traffic attributes, namely axle weights and distances between axles for each vehicle. It is theoretically shown that it is convenient to introduce a fictitious weightless axle, which has been termed 'Virtual Axle', in the Bridge Weigh-in-Motion calculations to derive a damage indicator. The latter can be used both as a new robust output-only model-free level I structural health monitoring technique and as a new self-calibration method for Bridge Weigh-In-Motion systems. The response of a fixed-fixed beam traversed by a 2-axle vehicle travelling over an irregular profile is used to validate the proposed method. By means of Monte Carlo simulation the influence of the key parameters such as the degree and location of damage, noise levels, span lengths and profile irregularities on the accuracy of the method are investigated. The results show that the 'Virtual Axle' method is able to detect small local damages in statically indeterminate structures.
Sponsorship
European Commission - Seventh Framework Programme (FP7)
Type of Material
Journal Article
Publisher
Elsevier
Journal
Engineering Structures
Volume
89
Start Page
26
End Page
36
Copyright (Published Version)
2015 Elsevier
Keywords
  • Virtual axle

  • Bridge Weigh-In-Motio...

  • Structural Health Mon...

  • Vehicle-Bridge intera...

  • Monte Carlo

  • Finite element

DOI
10.1016/j.engstruct.2015.02.001
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Civil Engineering Research Collection
Scopus© citations
16
Acquisition Date
Jan 28, 2023
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1887
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