Examining Changes in Bridge Frequency due to Damage using the Contact-Point Response of a Passing Vehicle
|Title:||Examining Changes in Bridge Frequency due to Damage using the Contact-Point Response of a Passing Vehicle||Authors:||Corbally, Robert; Malekjafarian, 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-by; Bridge; Structural health monitoring; SHM; Damage detection; Contact-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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