|Table of Contents|

Citation:
　Rutuja Chavan,B. Venkataramana,Pratik Acharya,et al.Comparison of Scour and Flow Characteristics Around Circular and Oblong Bridge Piers in Seepage Affected Alluvial Channels[J].Journal of Marine Science and Application,2018,(2):254-264.[doi:10.1007/s11804-018-0016-6]
Click and Copy

Comparison of Scour and Flow Characteristics Around Circular and Oblong Bridge Piers in Seepage Affected Alluvial Channels

Info

Title:
Comparison of Scour and Flow Characteristics Around Circular and Oblong Bridge Piers in Seepage Affected Alluvial Channels
Author(s):
Rutuja Chavan;  B. Venkataramana;  Pratik Acharya;  Bimlesh Kumar
Affilations:
Author(s):
Rutuja Chavan;  B. Venkataramana;  Pratik Acharya;  Bimlesh Kumar
Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
Keywords:
Downward seepage; Oblong pier; Scour; Strouhal number; Turbulent kinetic energy
分类号:
-
DOI:
10.1007/s11804-018-0016-6
Abstract:
The present study examines scour geometry and turbulent flow characteristics around circular and oblong piers in alluvial channel with downward seepage. Experiments were conducted in plane sand bed of non-uniform sand under no seepage, 10% seepage and 15% seepage conditions. Scour depth at oblong pier is significantly lesser than the scour depth at circular one. However, the scour depth at both piers reduces with downward seepage. The measurements show that the velocity and Reynolds stresses are negative near the bed at upstream of piers where the strong reversal occurs. At downstream of oblong pier near the free surface, velocity and Reynolds stresses are less positive; whereas, they are negative at downstream of circular pier. The streamline shape of oblong pier leads to reduce the strength of wake vortices and consequently reversal flow at downstream of pier. With application of downward seepage turbulent kinetic energy is decreasing. The results show that the wake vortices at oblong pier are weaker than the wake vortices at circular pier. The strength of wake vortices diminishes with downward seepage. The Strouhal number is lesser for oblong pier and decreases with downward seepage for both oblong and circular piers.

References:

Ahmed F, Rajaratnam N (1998) Flow around bridge piers. J Hydraul Eng 124(3):288-300. https://doi.org/10.1061/(ASCE)0733-9429(1998)124:3(288)
Al-Shukur AHK, Obeid ZH (2016) Experimental study of bridge pier shape to minimize local scour. Int J Civil Eng Technol 7(1):162-171
Arlinghaus R, Engelhardt C, Sukhodolov A, Wolter C (2002) Fish recruitment in a canal with intensive navigation:implications for ecosystem management. J Fish Biol 61(6):1386-1402. https://doi.org/10.1111/j.1095-8649.2002.tb02484.x
Armstrong JD, Kemp PS, Kennedy GJA, Ladle M, Milner NJ (2003) Habitat requirements of Atlantic salmon and brown trout in rivers and streams. Fish Res 62(2):143-170. https://doi.org/10.1016/S0165-7836(02)00160-1
Ataie-Ashtiani B, Aslani-Kordkandi A (2013) Flow field around single and tandem piers. Flow, Turbul Combust 90(3):471-490. https://doi.org/10.1007/s10494-012-9427-7
Bennett JP, Nordin CF (1977) Simulation of sediment transport and armouring/simulation des transports solides et de l’armure du lit.Hydrol Sci J 22(4):555-569. https://doi.org/10.1080/02626667709491760
Breusers HNC, Nicollet G, Shen HW (1977) Local scour around cylindrical piers. J Hydraul Res 15(3):211-252. https://doi.org/10.1080/00221687709499645
Brunke M, Gonser TOM (1997) The ecological significance of exchange processes between rivers and groundwater. Freshw Biol 37(1):1-33.https://doi.org/10.1046/j.1365-2427.1997.00143.x
Cao D, Chiew YM (2014) Suction effects on sediment transport in closed-conduit flows. J Hydraul Eng 140(5):04014008. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000833
Chang WY, Lai JS, Yen CL (2004) Evolution of scour depth at circular bridge piers. J Hydraul Eng 130(9):905-913. https://doi.org/10.1061/ASCE!0733-9429~2004!130:9~905
Chavan R, Kumar B (2017) Experimental investigation on flow and scour characteristics around tandem piers in sandy channel with downward seepage. J Mar Sci Appl 16(3):313-322. https://doi.org/10.1007/s11804-017-1426-6
Chavan R, Sharma A, Kumar B (2017) Effect of downward seepage on turbulent flow characteristics and bed morphology around bridge piers. J Mar Sci Appl 16(1):60-72. https://doi.org/10.1007/s11804-017-1394-x
Chiew YM, Melville BW (1987) Local scour around bridge piers. J Hydraul Res 25(1):15-26. https://doi.org/10.1080/00221688709499285
Deshpande V, Kumar B (2016) Turbulent flow structures in alluvial channels with curved cross-sections under conditions of downward seepage. Earth Surf Process Landf 41(8):1073-1087. https://doi.org/10.1002/esp.3889
Devi TB, Kumar B (2015) Turbulent flow statistics of vegetative channel with seepage. J Appl Geophys 123:267-276. https://doi.org/10.1016/j.jappgeo.2015.11.002
Ettema R (1980) Scour at bridge piers. Rep. No. 216, School of Engineering, Univ. of Auckland, Auckland, New Zealand
Goring DG, Nikora VI (2002) Despiking acoustic Doppler velocimeter data. J Hydraul Eng 128(1):117-126. https://doi.org/10.1061/(ASCE)0733-9429(2002)128:1(117)
Igarashi T (1981) Characteristics of the flow around two circular cylinders arranged in tandem:1st report. Bull JSME 24(188):323-331.https://doi.org/10.1299/jsme1958.24.323
Izadinia E, Heidarpour M, Schleiss AJ (2013) Investigation of turbulence flow and sediment entrainment around a bridge pier. Stoch Env Res Risk A 27(6):1303-1314. https://doi.org/10.1007/s00477-012-0666-x
Jones, J. B., & Mulholland, P. J. (1999). Streams and ground waters.Academic press
Jueyi S, Hossein A, Abdolreza K, Samani A, Mehrnoosh M (2010) Clearwater scour around semi-elliptical abutments with armored beds. Int J Sediment Res 25:233-245. https://doi.org/10.1016/S1001-6279(10)60041-8
Karim MF, Holly FM Jr (1986) Armoring and sorting simulation in alluvial rivers. J Hydraul Eng 112(8):705-715. https://doi.org/10.1061/(ASCE)0733-9429(1986)112%3A8(705)
Kinzli KD, Martinez M, Oad R, Prior A, Gensler D (2010) Using an ADCP to determine canal seepage loss in an irrigation district.Agric Water Manag 97(6):801-810. https://doi.org/10.1016/j.agwat.2009.12.014
Kirkil G, Constantinescu G, Ettema R (2009) Detached eddy simulation investigation of turbulence at a circular pier with scour hole. J Hydraul Eng 135(11):888-901. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000101
Kothyari UC, Garde RCJ, Ranga Raju KG (1992) Temporal variation of scour around circular bridge piers. J Hydraul Eng 118(8):1091-1106. https://doi.org/10.1061/(ASCE)0733-9429(1992)118:8(1091)
Krishnamurthy K, Rao S (1969) Theory and experiment in canal seepage estimation using radioisotopes. J Hydrol 9(3):277-293. https://doi.org/10.1016/0022-1694(69)90022-5
Laursen EM, Toch A (1956) Scour around bridge piers and abutments, vol 4. Iowa Highway Research Board, Ames
Lee HY, Odgaard AJ (1986) Simulation of bed armoring in alluvial channels. J Hydraul Eng 112(9):794-801. https://doi.org/10.1061/(ASCE)0733-9429(1986)112:9(794)
Maity H, Mazumder BS (2012) Contributions of burst-sweep cycles to Reynolds shear stress over fluvial obstacle marks generated in a laboratory flume. Int J Sediment Res 27(3):378-387. https://doi.org/10.1016/S1001-6279(12)60042-0
Marsh NA, Western AW, Grayson RB (2004) Comparison of methods for predicting incipient motion for sand beds. J Hydraul Eng 130(7):616-621. https://doi.org/10.1061/~ASCE!0733-9429~2004!130:7~616
Martin CA, Gates TK (2014) Uncertainty of canal seepage losses estimated using flowing water balance with acoustic Doppler devices. J Hydrol 517:746-761. https://doi.org/10.1016/j.jhydrol.2014.05.074
Melville BW, Chiew YM (1999) Time scale for local scour at bridge piers. J Hydraul Eng 125(1):59-65. https://doi.org/10.1061/(ASCE)0733-9429(1999)125:1(59)
Melville BW, & Coleman SE (2000) Bridge scour. Water Resources Publication
Melville BW, Sutherland AJ (1988) Design method for local scour at bridge piers. J Hydraul Eng 114(10):1210-1226. https://doi.org/10.1061/(ASCE)0733-9429(1988)114:10(1210)
Oliveto G, Hager WH (2002) Temporal evolution of clear-water pier and abutment scour. J Hydraul Eng 128(9):811-820. https://doi.org/10.1061/(ASCE)0733-9429(2002)128:9(811)
Patel M, Deshpande V, Kumar B (2015) Turbulent characteristics and evolution of sheet flow in an alluvial channel with downward seepage. Geomorphology 248:161-171. https://doi.org/10.1016/j.geomorph.2015.07.042
Qi M, Chiew YM, Hong JH (2012) Suction effects on bridge pier scour under clear-water conditions. J Hydraul Eng 139(6):621-629.https://doi.org/10.1061/(ASCE)HY.1943-7900.0000711
Rao AR, Sreenivasulu G, Kumar B (2011) Geometry of sand-bed channels with seepage. Geomorphology 128(3):171-177. https://doi.org/10.1016/j.geomorph.2011.01.003
Raudkivi AJ, Ettema R (1983) Clear-water scour at cylindrical piers. J Hydraul Eng 109(3):338-350. https://doi.org/10.1061/(ASCE)0733-9429(1983)109:3(338)
Richardson, E.V. and Davies, S.R. 1995. "Evaluating scour at bridges".Rep. No. FHWAIP-90-017 (HEC 18), Federal Administration, U.S. Department of Transportation, Washington, D.C.
Sharma HD, & Chawla AS (1975) Manual of canal lining. In Technical Report No. l4. Central Board of Irrigation and Power New Delhi
Shirhole AM, Holt RC (1991) Planning for a comprehensive bridge safety program. Transp Res Rec 1290:39-50
Soltani-Gerdefaramarzi S, Afzalimehr H, Chiew YM, Gallichand J, Ghasemi M (2013) Turbulent characteristics in flow subjected to bed suction and jet injection as a pier-scour countermeasure. Int J Hydraul Eng 2(5):93-100. https://doi.org/10.5923/j.ijhe.20130205.03
Soltani-Gerdefaramarzi S, Afzalimehr H, Chiew YM, Gallichand J (2014) Reduction of pier scour using bed suction and jet injection.Proc Inst Civil Eng, Water Manage 167(2):105-114
Sumner D, Wong SST, Price SJ, Paidoussis MP (1999) Fluid behaviour of side-by-side circular cylinders in steady cross-flow. J Fluids Struct 13(3):309-338
Tanji KK, & Kielen NC (2002) Agricultural drainage water management in arid and semi-arid areas. FAO
Wu B, Molinas A, Julien PY (2004) Bed-material load computations for nonuniform sediments. J Hydraul Eng 130(10):1002-1012
Yammaz AM, Altinbilek HD (1991) Study of time-dependent local scour around bridge piers. J Hydraul Eng 117(10):1247-1268
Yang SQ, Tan SK, Lim SY (2004) Velocity distribution and dipphenomenon in smooth uniform open channel flows. J Hydraul Eng 130(12):1179-1186

Memo

Memo:
Received date:2017-05-16;Accepted date:2017-08-01。
Corresponding author:Bimlesh Kumar,bimk@iitg.ernet.in
Last Update: 2018-10-11