Image-Based Techniques for the Advanced Characterization of Scour around Bridge Piers in Laboratory

AbstractThe study of local scour in bridge foundations is often restricted to quantifying maximum scour depth on the upstream side. This is limiting to the understanding of the resulting scour by numerical methods, for which the shape of the scour hole is a mandatory input. In this work, two nonintr...

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Bibliographic Details
Published in:Journal of hydraulic engineering (New York, N.Y.) N.Y.), 2022-06, Vol.148 (6)
Main Authors: Bento, Ana Margarida, Couto, Lúcia, Viseu, Teresa, Pêgo, João Pedro
Format: Article
Language:English
Subjects:
Bridge foundations
Bridge piers
Bridges
Calibration
Cameras
Flumes
Laboratories
Mathematical models
Measuring techniques
Numerical methods
Numerical models
Photogrammetry
Piers
Scour
Scouring
Steady flow
Submersibles
Technical Note
Technical Notes
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Summary:AbstractThe study of local scour in bridge foundations is often restricted to quantifying maximum scour depth on the upstream side. This is limiting to the understanding of the resulting scour by numerical methods, for which the shape of the scour hole is a mandatory input. In this work, two nonintrusive three-dimensional (3D) image-based measuring techniques, consisting of close-range photogrammetry and a Kinect V2 sensor, were employed to characterize the initial and final development of scour holes around piers, under steady flow in a laboratory flume. A novel two-dimensional (2D) methodology was also applied for continuous measurement of the side of the scour hole using submersible cameras. Models of the scour hole geometries in the vicinity of two oblong bridge piers were obtained at high accuracy levels. A database for calibration and validation of numerical models is thus provided.
ISSN:0733-9429
1943-7900
DOI:10.1061/(ASCE)HY.1943-7900.0001981