DIC-monitoring of full-scale concrete bridge using high-resolution wide-angle lens camera

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2018Researchpeer-review

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Monitoring in combination with proof- and high magnitude load testing can evaluate potentially higher load carrying capacities in existing bridges. However, such in-situ testing provides challenges like limited test-time, difficult calibration under in-situ conditions etc. Consequently, in-situ load-testing significantly amplifies the requirements to monitoring. This paper focuses on results from in-situ DIC-monitoring. The method was used to evaluate deformations- and crack initiation on large concrete bridge surfaces during high magnitude load-testing. DIC-measurements are very susceptible to light, surface texture and contrast, etc. Laboratory testing and preliminary site inspections were done to investigate the measurement conditions. Monitoring was executed with conventional- and wide-angle lens DSLR-cameras positioned underneath the bridge, measuring vertically to the surface. The 2D output from the DIC-software was corrected for wide-angle lens distortions and out-of-plane deflections. The method seems desirable for a more generic use, and has potential for the evaluation of stop criteria.
Original languageEnglish
Title of host publicationMaintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges : Proceedings of the Ninth International Conference on Bridge Maintenance, Safety and Management
PublisherCRC Press
Publication date2018
Pages1492-1499
ISBN (Print) 9781138730458
Publication statusPublished - 2018
Event9th International Conference on Bridge Maintenance, Safety and Management - Melbourne, Australia
Duration: 9 Jul 201813 Jul 2018
Conference number: 9

Conference

Conference9th International Conference on Bridge Maintenance, Safety and Management
Number9
CountryAustralia
CityMelbourne
Period09/07/201813/07/2018

ID: 154615138