Image-Based Techniques for the Advanced Characterization of Scour around Bridge Piers in Laboratory
Publication: Journal of Hydraulic Engineering
Volume 148, Issue 6
Abstract
The 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.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request (experimental conditions and results from experiments—DEMs and 2D bed profiles).
Acknowledgments
The first author acknowledges the financial support of the Portuguese Foundation for Science and Technology (FCT) through the Ph.D. scholarship PD/BD/127798/2016, in the framework of the Doctoral Program INFRARISK—“Analysis and Mitigation of Risks in Infrastructures.” This research was cosupported by the strategical funding from FCT UIDB/04423/2020 and UIDP/04423/2020. The first author thanks Luis Mendes for his help in developing the Python code. The authors thank the team of the Laboratory of Construction and Modelling and the Center of Scientific Instrumentation of the National Laboratory of Civil Engineering (LNEC) for their technical assistance.
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Published In
Journal of Hydraulic Engineering
Volume 148 • Issue 6 • June 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Feb 16, 2021
Accepted: Jan 28, 2022
Published online: Mar 16, 2022
Published in print: Jun 1, 2022
Discussion open until: Aug 16, 2022
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