Evolution of Scour Depth at Circular Bridge Piers
Publication: Journal of Hydraulic Engineering
Volume 130, Issue 9
Abstract
Experiments of bridge pier scour are carried out under steady and unsteady clear-water scour conditions with uniform and nonuniform sediments. Around the pier nose, the sediment size variation of surface bed materials is investigated, and a regressed formula is obtained for estimating the mixing layer thickness in terms of median sediment size and geometric standard deviation of grain size distribution. A method based on the mixing layer concept is developed for calculating the equilibrium scour depth in nonuniform sediment. Based on the experimental data of scour rate, a model simulating the scour-depth evolution under steady flow in nonuniform sediment is presented. By analyzing experimental data, a scheme is proposed for computing the scour-depth evolution under unsteady flow.
Get full access to this article
View all available purchase options and get full access to this article.
References
Bennett, J. P., and Nordin, C. F.(1977). “Simulation of sediment transport and armoring.” Hydrol. Sci. Bull., 22(12), 555–569.
Borah, D. K., Alonso, C. V., and Prasad, S. N.(1982). “Routing graded sediments in streams: Formulations.” J. Hydraul. Div., Am. Soc. Civ. Eng., 108(12), 1486–1503.
Breusers, H. N. C., Nicollet, G., and Shen, H. W.(1977). “Local scour around cylindrical piers.” J. Hydraul. Res., 15(3), 211–252.
Chiew, Y. M.(1995). “Mechanics of riprap failure at bridge piers.” J. Hydraul. Eng., 121(9), 635–643.
Chiew, Y. M., and Melville, B. W.(1987). “Local scour around bridge piers.” J. Hydraul. Res., 25(1), 15–26.
Ettema, R. (1980). “Scour at bridge piers.” Rep. No. 216, School of Engineering, Univ. of Auckland, Auckland, New Zealand.
Hirano, M.(1971a). “River degradation with armouring.” Trans. Jpn. Soc. Civ. Eng., 3, 194–195.
Hirano, M.(1971b). “Studies on variation and equilibrium state of a river bed composed of non-uniform material.” Trans. Jpn. Soc. Civ. Eng., 4, 128–129.
Karim, M. F., and Holly, F. M.(1986). “Armoring and sorting simulation in alluvial rivers.” J. Hydraul. Eng., 112(8), 705–715.
Kothyari, U. C. (1989). “Scour around bridge piers.” PhD thesis, Univ. of Roorkee, Roorkee, India.
Kothyari, U. C., Garde, R. J., and Range Raju, K. G.(1992). “Temporal variation of scour around circular bridge piers.” J. Hydraul. Eng., 118(8), 1091–1106.
Lee, H. Y., and Odgaard, A. J.(1986). “Simulation of bed armoring in alluvial channel.” J. Hydraul. Eng., 112(9), 794–801.
Melville, B. W., and Chiew, Y. M.(1999). “Time scale for local scour at bridge piers.” J. Hydraul. Eng., 125(1), 59–65.
Melville, B. W., and Coleman, S. E. (2000). Bridge scour, Water Resources Publications, LLC, Highlands Ranch, Colo.
Melville, B. W., and Sutherland, A. J.(1988). “Design method for local scour at bridge piers.” J. Hydraul. Eng., 114(10), 1210–1226.
Mia, M. F., and Nago, H.(2003). “Design model of time-dependent local scour at circular bridge pier.” J. Hydraul. Eng., 129(6), 420–427.
Oliveto, G., and Hager, W. H.(2002). “Temporal evolution of clear-water pier and abutment scour.” J. Hydraul. Eng., 128(9), 811–820.
Raudkivi, A. J.(1986). “Functional trends of scour at bridge piers.” J. Hydraul. Eng., 112(1), 1–13.
Raudkivi, A. J., and Ettema, R.(1983). “Clear-water scour at cylindrical piers.” J. Hydraul. Eng., 109(3), 338–350.
Shen, H. W., Schneider, V. R., and Karaki, S. S.(1969). “Local scour around bridge piers.” J. Hydraul. Div., Am. Soc. Civ. Eng., 95(6), 1919–1940.
Vanoni, V. A., ed. (1975). Sedimentation engineering, ASCE Task Committee for the Preparation of the Manual on Sedimentation, Sedimentation Committee of the Hydraulics Division, Am. Soc. Civ. Eng., New York.
Yanmaz, A. M., and Altinbilek, H. D.(1991). “Study of time-dependent local scour around bridge piers.” J. Hydraul. Eng., 117(10), 1247–1268.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 130 • Issue 9 • September 2004
Pages: 905 - 913
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Jun 20, 2002
Accepted: Dec 8, 2003
Published online: Aug 16, 2004
Published in print: Sep 2004
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.