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Adaption of 3D Scanning Technology for High Precision Bridge Inspection
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2023-03-31
[PDF-4.30 MB]
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Edition:Final Report 02/01/2018 - 06/30/2020
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Abstract:Corrosion at beam ends is one of the most widespread causes of damage in steel bridges. Accurate determination of the level of section loss due to corrosion damage is critical for estimating the bearing capacity and load rating of a bridge. Current evaluation methods are labor intensive and dependent on subjective assessments by inspectors. Unique features of handheld 3D scanning technology offer significant potential for application in bridge inspections and corrosion damage assessment. 3D scanners can provide accurate information on the pattern and amount of section loss at beam ends. This study evaluated the application of commercially available 3D scanning technology for bridge inspection. The study included both laboratory and field evaluations to determine if the technology could create accurate, high-resolution 3D representations of locally corroded steel beams. The 3D models were used to extract information such as the maximum reduction in thickness and the pattern of corrosion. Additionally, this research project aims to develop a reliable and repeatable protocol for using 3D scanners in bridge inspections. The protocol will include recommendations for scanner settings, data collection and data processing. The project aims to provide recommendations for the integration of 3D scanning technology into bridge inspection programs. The resulting protocol and recommendations will improve the accuracy and efficiency of bridge inspections, reduce the risk of catastrophic failures, and extend the service life of steel bridges.
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