Effect of Local Roughness on Local Scouring Reduction at Bridge Abutment

Document Type : Research Paper


1 Student, in the field of Hydraulic Structures, Agricultural College, Ferdowsi University of Mashhad , Mashhad, Iran.

2 Professor, Department of Water Engineering, Agricultural College, Isfahan University of Technology, Isfahan, Iran.


Bridges are one of the most important structures which are under attention from many years. Bridge is a structure to cross over obstacles such as rivers or valleys. In recent decades, despite using modern materials and technology, and spending  lot of costs for designing and building bridges, failure of them are commonly reported due to flood and local scouring. Local scouring occurs by placing obstacles such as abutments in flow direction. Different methods of reducing scour hole have been investigated by researchers. (Johnson et al. (2001) and Kayaturk et al.  (2012)).
The methods of scour reduction are divided to two main groups,  known as direct and indirect methods. In direct methods or bed resistant methods, the resistant of bed against scouring is increased by adding different materials to the bed and near groin. In these methods, flow patterns remain constant but resistant of bed materials increases. Morales et al. 2008 investigated these kinds of methods by using of gravels and rocks. Korkut et al. 2006 used sacks of sands (geo bag). In indirect methods which are known for changing flow pattern, changes are made to flow pattern to reduce the power of destructive vortexes or remove them from head of abutment. Examples of investigating these methods are using parallel walls in abutments by Li et al. 2006, using submerged plates by Johanson et al 2001 who investigated a short vertical abutment in flood plain of a river. They investigated effects of different cases of placement submerged plates in main channel on water scouring. They reported that these plates eliminate vortexes from abutment and scour hole will transfer to the middle of the river; however scour depth will increase in this method.
One way of controlling and reducing local scouring, is to create roughness on abutments which are prominent spherical and angled rings concrete. In this study, by creating roughness on semi-circular abutment, their effects on reducing scour depth were investigated.


Main Subjects

1- Alizadeh,  V.N.,  Saneie,  M.,  and  Azhdary  Moghaddam,  M.  2012. Experimental  investigations  on effect  of  buried  vane’  angels  to  control  scour  at  vertical  wall  abutments  and  spur  dykes.  9th International Congrees on Civil Engineering. Isfahan. Iran.
2- Coleman, S.E., Lauchlan, C.S. and Melville, B.W., 2003. Clear-water scour development at bridge abutments. Journal of Hydraulic Research, 41(5), pp.521-531.
3- Dey, S. and A. K. Barbhuiya 2005. Time variation of scour at abutments. Journal of Hydraulic Engineering, 131(1): 11-23.
4- Dey, S., Sumer, B. M., Fredsøe, J. 2006. Control of scour at vertical circular piles under waves and current. Journal of Hydraulic Engineering, 132(3): 270-279.
5- Heidarpour, M. 2002. Control and reduction of local scour at bridge piers by using slot. Proceeding of
River Flow, Louvain, Belgium, 2
6- Hormozi, M., Taleb Bidokhti, N., Shafai Bajestan, M. 2014.'Experimental Investigation of Applications of Artificial Roughness for Bridge Pier Scour Reduction, Journal of Hydraulics, 9(2), pp. 11-21. (In Persian)
7- Izadinia, E., Heydarpoor, M. 2014. Investigation and Comparison of Efficiency of Cable and Groove in Protection Against Scouring, Irrigation Sciences and Engineering, 37(1), pp. 23-32. (In Persian)
8- Johnson, P., Hey, R., Tessier, M., and Rosgen, D. 2001. Use of vanes for control of scour at vertical wall abutments. Journal of Hydraulic Engineering, 127(9): 772-778.
9- Kayaturk, S. Y., M. A. Kokpinar, and M. Gogus. 2004. Effect of collar on temporal development of scour around bridge abutments. 2nd International Conference on scour and erosion, IAHR, Singapore, 7: 14-17.
10- Koken, M. and Constantinescu, G., 2008. An investigation of the flow and scour mechanisms around isolated spur dikes in a shallow open channel: 1. Conditions corresponding to the initiation of the erosion and deposition process. Water Resources Research, 44(8): 1-16.
11- Kummar, V., Ranga Raju, K. G., and N. Vittal. 1999. Reduction of local scour around bridge piers using slot and collar. Journal of Hydraulic Engineering, ASCE, 125(12): 1302–1305.
12- Kwan, T.F., 1988. A study of abutment scour. School of Engineering, University of Auckland, Auckland, New Zealand (No. 451). Report.
13- Li, H., Barkdoll, B., Kuhnle, R., and Alonso, C. 2006. Parallel walls as an abutment scour countermeasure. Journal of Hydraulic Engineering, 132(5): 510-520.
14- Li, H.-M. T., R. Kuhnle, and B. M. T. Barkdoll. 2005. Countermeasures against scour at
abutments. Lab Publ. 49: 150.
15- Melville, B. 1992. Local scour at bridge abutments. Journal of Hydraulic Engineering,118(1): 615-631.
16- Melville, B. W. and Y. M. Chiew. 1999. Time scale for local scour at bridge piers. Journal of Hydraulic Engineering, ASCE, 125(1): 59–65.
17- Melville, B., van Ballegooy, S., Coleman, S., and Barkdoll, B. 2006. Scour countermeasures for wing-wall abutments. Journal of Hydraulic Engineering, 132(6): 563-574.
18- Mia, F. and H. Nago. 2003. Design Method of Time-Dependent Local Scour at Circular Bridge Pier. Journal of Hydraulic Engineering, ASCE, 117(7): 891-904.
19- Molinas, A., K. Kheireldin, and B. Wu. 1998. Shear stress around vertical wall abutments. Journal of Hydraulic Engineering, 124(8): 822-830.
20- Oliveto, G. and Hager, W.H., 2002. Temporal evolution of clear-water pier and abutment scour. Journal of Hydraulic Engineering, 128(9), pp.811-820.
21- Raudkivi, A. J. and R. Ettema 1983. Clear-water scour at cylindrical piers. Journal of Hydraulic Engineering, 109(3): 338-350.
22- Raudkivi, A. J., and Sutherland, A. J. 1981. Scour at bridge crossings. Report  No. 51, Road Research Unit, National Roads Board, Wellington, New Zealand.
23- Shafai Bajestan, M. 1994. Hydraulics of Sediment. Ahvaz. univ. press. 327p. (In Persian).
24- Sturm, T. W. 2006. Scour around bankline and setback abutments in compound channels. Journal of Hydraulic Engineerin,. 132(1): 21-32.
25- Thompson, D. M. 2006. The role of vortex shedding in the scour of pools. Advances in Water Resources, 29(2): 121-129.
26- Vice Presidency For Strategic Planning and Supervision of Islamic Republic of Iran. (2011). Guideline for Estimation of  Local Scour. No. 549. (In Persian)
27- Vittal, N., U. Kothyari, and M. Haghighat. 1994. Clear-water scour around bridge pier group. Journal of Hydraulic Engineering, 120(11): 1309-1318.
28- Yanmaz, A. M., and H. D. Altinbilek. 1991. Study of time-dependent local scour around bridge piers. Journal of Hydraulic Engineering, ASCE, 117(10):1247–1268.
Volume 41, Issue 3
November 2018
Pages 29-44
  • Receive Date: 17 April 2016
  • Revise Date: 04 October 2016
  • Accept Date: 13 November 2016
  • Publish Date: 23 October 2018