Monitoring and repair of an impact damaged prestressed bridge

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Title: Monitoring and repair of an impact damaged prestressed bridge
Authors: Pakrashi, Vikram
Harkin, Julie
Kelly, Joe
et al.
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Date: Mar-2013
Online since: 2019-05-13T12:16:53Z
Abstract: This paper details the monitoring and repair of an impact damaged prestressed concrete bridge. The repair was required following an impact from a low-loader carrying an excavator while passing underneath the bridge. The repair was carried out by preloading the bridge in the vicinity of the damage to relieve some prestressing. This preload was removed following the hardening and considerable strength gain of the repair material. The true behaviour of damaged prestressed concrete bridges during repair is difficult to estimate theoretically due to a lack of benchmarking and inadequacy of assumed damage models. A network of strain gauges at locations of interest was thus installed during the entire period of repair. Effects of various activities were qualitatively and quantitatively observed. The interaction and rapid, model-free calibration of damaged and undamaged beams, including identification of damaged gauges, were also probed. This full-scale experiment is expected to be of interest and benefit to the practising engineer and the researcher alike.
Type of material: Journal Article
Publisher: ICE Publishing
Journal: Proceedings of the Institution of Civil Engineers: Bridge Engineering
Volume: 166
Issue: 1
Start page: 16
End page: 29
Copyright (published version): 2013 ICE Publishing
Keywords: Maintenance and inspectionBeams and girdersFailuresField testing and monitoringStrength and testing of materialsConcrete structures
DOI: 10.1680/bren.10.00057
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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