Examining Changes in Bridge Frequency due to Damage using the Contact-Point Response of a Passing Vehicle

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Title: Examining Changes in Bridge Frequency due to Damage using the Contact-Point Response of a Passing Vehicle
Authors: Corbally, RobertMalekjafarian, Abdollah
Permanent link: http://hdl.handle.net/10197/12321
Date: 7-Jun-2021
Online since: 2021-07-12T15:19:00Z
Abstract: Ongoing inspection and maintenance of bridges poses a challenging task for infrastructure owners who must manage large bridge stocks with limited budgets. Drive-by monitoring approaches, using sensors in a vehicle, provide a promising solution to this challenge. This paper investigates the use of the response at the point-of-contact between the tyre and the bridge as a means of monitoring bridge frequency. An expression is derived to allow the contact-point (CP) response to be inferred directly from in-vehicle measurements, expanding on previous studies by allowing the vehicle suspension characteristics to be considered. The sensitivity of the CP-response to the pavement characteristics is investigated in detail and a rigid-disk model is used to overcome issues with how existing vehicle-bridge interaction models consider the interaction between the wheel and the pavement. The feasibility of the CP-response as a measure of bridge condition is investigated and results show that the CP-response significantly outperforms the response measured directly on the vehicle. The CP-response is successful in identifying the bridge frequency and changes caused by damage, without being influenced by the vehicle frequencies. Incorporating the CP-response into drive-by bridge monitoring will improve accuracy over existing methods which use the vehicle response alone.
Type of material: Journal Article
Publisher: Taylor & Francis
Journal: Journal of Structural Integrity and Maintenance
Volume: 6
Issue: 3
Start page: 148
End page: 158
Copyright (published version): 2021 the Authors
Keywords: Drive-byBridgeStructural health monitoringSHMDamage detectionContact-point response
DOI: 10.1080/24705314.2021.1906088
Language: en
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/
Appears in Collections:Civil Engineering Research Collection

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