A Large Bridge Pier in an Alluvial Channel: Local Scour versus Morphological Effects and the Role of Physical Models
Publication: Journal of Hydraulic Engineering
Volume 148, Issue 8
Abstract
The large pier of an emblematic bridge built in 2008 in the Ebro River (Zaragoza, Spain) obstructs the flow in high floods. Clear-water scour experiments in a scale model were conducted to anticipate maximum local scour depths and design riprap protections. These proved to be effective during a large flood event in 2015, but bed aggradation under the left bridge span and deep scour under the right one, not mirroring the bed deformation observed in the model, raised concerns about the bridge safety. The effects of the protected pier on the changes in the aftermath of the 2015 flood are discussed. It is shown that a large meander upstream generated an imbalance in the spanwise bedload distribution, leading to sedimentation on the left and contraction scour on the right. The paper argues for the need to take into account the effects of large piers on river morphology at the bridge planning phase. The case study shows that using a clear-water model to design the riprap protection is adequate, but more importantly, that the fluvial processes during a flood could only be studied with a live-bed model with geometrical detail of the full river reach, namely, the upstream meander.
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Data Availability Statement
The model and prototype data (surveys) are available from the corresponding author upon reasonable request.
Acknowledgments
Thanks to the insightful, helpful comments by the Associate Editor. Thanks to the Ebro Water Authority (Marisa Moreno and Miriam Pardos) and Zaragoza Municipality (Luis Manso) for providing hydrological data and field surveys. We also thank the financial support of the FEDER-COMPETE2020 (POCI) and Portuguese funds (Foundation for Science and Technology, IP) through project PTDC/ECI-EGS/29835/2017—POCI-01-0145-FEDER-029835.
References
ASCE. 1999. Stream stability and scour at highway bridges. Reston, VA: ASCE.
ASCE. 2000. Hydraulic modelling. Concepts and practice. Reston, VA: ASCE.
Breusers, N. N. C., and A. J. Raudkivi. 1991. Scouring. Hydraulic structures. Rotterdam, Netherlands: A.A. Balkema.
Chang, H. H. 1984. “Regular meander path model.” J. Hydraul. Eng. 110 (10): 1398–1411. https://doi.org/10.1061/(ASCE)0733-9429(1984)110:10(1398).
Chang, H. H. 1988. Fluvial processes in river engineering. New York: Wiley.
Constantinescu, G., M. Koken, and J. Zeng. 2011. “The structure of turbulent flow in an open channel bend of strong curvature with deformed bed: Insight provided by detached eddy simulation.” Water Resour. Res. 47 (5): 1–17. https://doi.org/10.1029/2010WR010114.
Deltares. 2021. “Delft3D flexible Mesh suite 1D/2D/3D Modelling suite for integral water solutions user Manual D-Flow Flexible Mesh.” Accessed May 18, 2022. https://content.oss.deltares.nl/delft3d/manuals/D-Flow_FM_User_Manual.pdf.
Dey, S. 2014. Fluvial hydrodynamics. Berlin: Springer.
Ettema, R., G. Kirkil, and M. Muste. 2006. “Similitude of large scale turbulence in experiments on local scour at cylinders.” J. Hydraul. Eng. 132 (1): 33–40. https://doi.org/10.1061/(ASCE)0733-9429(2006)132:1(33).
Ettmer, B., F. Orth, and O. Link. 2015. “Live-bed scour at bridge piers in a lightweight polystyrene bed.” J. Hydraul. Eng. 141 (9): 04015017. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001025.
Fael, C. M. S. 2007. “Erosões localizadas junto de encontros de pontes e respectivas medidas de proteccção (Local sour at bridge abutments and their protection).” Ph.D. thesis, Dept. of Civil Engineering and Architecture, Universidade da Beira Interior.
FHWA (Federal Highway Administration). 2009. Bridge scour and stream instability countermeasures: Experience, selection and design guidance, HEC-23. 3rd ed. Fort Collins, CO: FHWA.
FHWA (Federal Highway Administration). 2012. Evaluating scour at bridges, HEC-18. 5th ed. Fort Collins, CO: FHWA.
Johnson, P. A., R. D. Hey, M. W. Horst, and A. J. Hess. 2001. “Aggradation at bridges.” J. Hydraul. Eng. 127 (2): 154–157. https://doi.org/10.1061/(ASCE)0733-9429(2001)127:2(154).
Kleinhans, M. G., H. R. A. Jagers, E. Mosselman, and C. F. Sloff. 2008. “Bifurcation dynamics and avulsion duration in meandering rivers by one-dimensional and three-dimensional models.” Water Resour. Res. 44 (8): W08454. https://doi.org/10.1029/2007WR005912.
Link, O., S. Henríquez, and B. Ettmer. 2019. “Physical scale modelling of scour around bridge piers.” J. Hydraul. Res. 57 (2): 227–237. https://doi.org/10.1080/00221686.2018.1475428.
Melville, B. W., and S. E. Coleman. 2000. Bridge scour. Fort Collins, CO: Water Resources Publ.
Moreno, M., R. Maia, and L. Couto. 2016a. “Prediction of equilibrium local scour depth at complex bridge piers.” J. Hydraul. Eng. 142 (11): 04016045. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001153.
Moreno, M., R. Maia, L. Couto, and A. Cardoso. 2016b. “Subtraction approach to experimentally assess the contribution of the complex pier components to the local scour depth.” J. Hydraul. Eng. 143 (4): 06016030. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001270.
Odgaard, J. 1986a. “Meander flow model. I. Development.” J. Hydraul. Eng. 112 (12): 1117–1135. https://doi.org/10.1061/(ASCE)0733-9429(1986)112:12(1117.
Odgaard, J. 1986b. “Meander flow model. II. Applications.” J. Hydraul. Eng. 112 (12): 1137–1149. https://doi.org/10.1061/(ASCE)0733-9429(1986)112:12(1137.
Oliveto, G., and W. H. Hager. 2014. “Morphological evolution of dune-like bed forms generated by bridge scour.” J. Hydraul. Eng. 140 (5): 06014009. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000853.
Raudkivi, A. J. 1990. Loose boundary hydraulics. 3rd ed. Oxford: Pergamon Press.
Rozovskii, I. L. 1957. Flow of water in bends of open channels. Translation by Y. Prushansky and S. Monson. Jerusalem, Israel: Israel Program for Scientific Translations.
Sheppard, D. M., M. Odeh, and T. Glasser. 2004. “Large scale clear-water pier scour experiments.” J. Hydraul. Eng. 130 (10): 957–963. https://doi.org/10.1061/(ASCE)0733-9429(2004)130:10(957).
Sistema Cartografico Nacional. 2022. “PNOHISTORICAL 2004–2019.” Accessed May 3, 2022. https://www.scne.es/productos.php#PNOAHISTORICO|2004-2019.
Vanoni, V. 1975. Sedimentation engineering. New York: ASCE.
Yang, Y., B. W. Melville, G. H. Macky, and A. Y. Shamseldin. 2019. “Local scour at complex bridge piers in close proximity under clear-water and live-bed flow regime.” Water 11 (8): 1530. https://doi.org/10.3390/w11081530.
Yang, Y., B. W. Melville, D. M. Sheppard, and A. Y. Shamseldin. 2018. “Clear-water local scour at skewed complex bridge piers.” J. Hydraul. Eng. 144 (6): 04018019. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001458.
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© 2022 American Society of Civil Engineers.
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Received: Apr 3, 2021
Accepted: Mar 16, 2022
Published online: Jun 14, 2022
Published in print: Aug 1, 2022
Discussion open until: Nov 14, 2022
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