Journal
JOURNAL OF CIVIL STRUCTURAL HEALTH MONITORING
Volume 11, Issue 5, Pages 1415-1428Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13349-021-00516-6
Keywords
Steel beam end repair; Three-dimensional scanning; Digital image correlation; 3D DIC; Full field measurement
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The collaborative investigation on the Mecklenburg Bridge conducted by UVA and the Virginia Transportation Research Council focused on using 3D-DIC deformation measurements and laser scanning to assess the behavior of the repaired bridge beam. Results showed that buckling did not occur, offering a method to evaluate the effectiveness of repaired steel beam ends.
A collaborative investigation between the University of Virginia (UVA) and the Virginia Transportation Research Council was performed on the Mecklenburg Bridge (I-85 over Route 1 in Mecklenburg County). The research team aided the Virginia Department of Transportation-Richmond District in the characterization of the bridge behavior of one of the bridge beams that had been repaired due to a previous web buckling and crippling failure. The investigation focused on collecting full-field three-dimensional digital image correlation (3D-DIC) deformation measurements during the dropping sequence (removal of jacking to support beam on bearing/pier). Additionally, measurements were taken of the section prior to and after dropping using a handheld laser scanner to assess the potential of lateral deformation or out-of-plane buckling. Results from the study demonstrated that buckling of the tested beam did not occur, but did provide a series of approaches that can be used to evaluate the effectiveness of repaired steel beam ends. Specifically, the results provided an approach that could estimate the dead load distribution through back-calculation.
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