1MS Student in Water Engineering Islamic Azad University, Science and Research Branch, Hormozgan, Iran
2Faculty Member at Institute of Soil Conservation and Watershed Management
3Faculty Member at Hormozgan University
Scour around hydraulic structures is an inevitable phenomenon . Recognition of this phenomenon and dealing with it is an issue considering which will ensure the project success . Local scour at piers has been reported as the most important factor in the destruction of the bridges . The use of submerged and non-submerged piles is one of the scour control methods . Submerged piles have been rarely used to assess scour . In the present study, the results of some tests with different flow rates and submergence percentages are given in the bridge abutment . The tests have been conducted at clear water conditions in a flume with length of 14m , width of 60cm and depth of 60cm . The results show that the increase in the submergence percentage of piles has a significant role in reducing pier scour.
 Arvanaqi, H., Farsadizadeh, D., Hosseinzadeh Dalir, A., Fakherifard, A. (2008). “Determination of appropriate dimensions of rectangular collar in the pier scour reduction”, Journal of Soil and Water Science, Volume 19, No.1.
 Mahbodi, A., Attari, J., Majdzadeh Tabatabaei, M.R. (2010). “Laboratory study of scour control resulted from horizontal submerged jets using stile”, Ferdowsi University of Mashhad, Iran.
 Poorhadi, M. H., Ghodsian, M. (2001).“protection of bridge fulcrum and breakwaters against local scouring”, International Conference on Hydraulic Structures, Department of Civil Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman.
 Agakhani Afshar, A.H., Maghfoor Maghrebi, M.; Ismaili, K. (2010).“Evaluation of the effect of pier crack and abutments geometry on the reduction of local scour”, Fifth National Congress of Civil Engineering, Ferdowsi University of Mashhad, Iran.
 Beheshti, A.A., Atai Ashtiani, B. (2008). “Numerical investigation of flow and scour pattern around the pile group”, Forth National Congress on Civil Engineering, Tehran University.
 Pirayesh, A., Sanei. M. (2011). “The impact of the distance of pile group from the bridge fulcrum in the reduction of local scour”, Tenth Iranian Conference on Hydraulics, University of Guilan,.
 Beheshti, A.A.; Atai Ashtiani, B. (2004). “Scouring at clear water conditions around the pier group”, First National Congress on Civil Engineering, Sharif University, Tehran.