Experimental investigation of clear-water temporal scour variation around bridge pier in gravel
Tóm tắt
Variation of temporal scour depth around circular piers under clear-water scour condition was studied experimentally for a variability of configuration studies, including different size of circular piers. A total of 96 experiments were carried out with more than 800 data sets of temporal scour depth in non-uniform gravel bed. The experimental data were used to calculate the temporal scour depth at different planes i.e. 0°, 90°, 180° and 270°, 0° plane indicates the maximum and 180° plane indicates minimum scour zones. Some of the previous methods of estimating temporal scour depth at 0° plane are studied in this study. Three temporal scour depths equations for 0°, 90°, 270° and 180° planes have been proposed in this study. The predictions of the temporal scour depth improved after the revised methods of Kothyari et al. (J Hydraul Eng 133(11):1229–1240, 2007). Results of the present proposed equation for 0° plane were compared with latest available relationships in literature and found in good agreements with observed values.
Tài liệu tham khảo
Aksoy AO, Bombar G, Arkis T, Guney MS (2017) Study of the time-dependent clear water scour around circular bridge piers. J Hydrol Hydromech 65(1):26–34
Chiew YM (1992) Scour protection at bridge piers. J Hydraul Eng (ASCE) 118(9):1260–1269
Choi SU, Choi B (2016) Prediction of time-dependent local scour around bridge piers. Water Environ J 30(1–2):14–21
Dey S, Bose SK, Sastry GL (1995) Clear water scour at circular piers: a mode. J Hydraul Eng 121(12):869–876
Diab R, Link O, Zanke U (2010) Geometry of developing and equilibrium scour holes at bridge piers in gravel. Can J Civ Eng 37(4):544–552
Khan M, Azamathulla HM, Tufail M (2012) Gene-expression programming to predict pier scour depth using laboratory data. J Hydroinform 14(3):628–645
Kothyari UC (1989) Scour around bridge piers. Doctoral dissertation, University of Roorkee, India
Kothyari UC, Garde RJ, Ranga Raju KG (1992) Temporal variation of scour around circular bridge piers. J Hydraul Eng 118(8):1091–1106
Kothyari UC, Ranga Raju KG (2001) Scour around spur dikes and bridge abutments. J Hydraul Res 39(4):367–374
Kothyari UC, Hager WH, Oliveto G (2007) Generalized approach for clear-water scour at bridge foundation elements. J Hydraul Eng 133(11):1229–1240
Kumar A (2011) Scour around circular piers founded in clay-sand-gravel sediment mixture. Doctoral dissertation, Indian Institute of Technology Roorkee, India
Lança RM, Fael CS, Maia RJ, Pêgo JP, Cardoso AH (2013) Clear-water scour at comparatively large cylindrical piers. J Hydraul Eng 139(11):1117–1125
Lodhi AS (2015) Scour around spur dikes and bridge piers founded in cohesive sediment mixture. Doctoral dissertation, Indian Institute of Technology Roorkee, India
Melville B, Chiew Y (1999) Time scale for local scour at bridge piers. J Hydraul Eng 125(59):59–65
Melville BW, Coleman SE (2000) Bridge scour. Water Resources Publication, Berlin
Melville BW, Sutherland AJ (1988) Design method for local scour at bridge piers. J Hydraul Eng 114(10):1210–1226
Oliveto G, Hager WH (2002) Temporal evolution of clear-water pier and abutment scour. J Hydraul Eng 128(9):811–820
Oliveto G, Hager WH (2005) Further results to time-dependent local scour at bridge elements. J Hydraul Eng 131(2):97–105
Pandey M, Ahmad Z, Sharma PK (2015) Estimation of maximum scour depth near a spur dike. Can J Civ Eng 43(3):270–278
Pandey M, Sharma PK, Ahmad Z, Singh UK (2017) Evaluation of existing equations for temporal scour depth around circular bridge piers. Environ Fluid Mech 17:1–15
Pandey M, Ahmad Z, Sharma PK (2017) Scour around impermeable spur dikes: a review. ISH J Hydraul Eng. https://doi.org/10.1080/09715010.2017.1342571
Pandey M, Sharma PK, Ahmad Z, Singh UK, Karna N (2017) Three dimensional velocity measurements around bridge piers in gravel bed. Mar Georesour Geotechnol. https://doi.org/10.1080/1064119X.2017.1362085
Raudkivi AJ, Witte HH (1990) Development of bed features. J Hydraul Eng 116(9):1063–1079
Richardson EV, Davis SR (2001) Evaluating scour at bridges: Federal Highway Administration Hydraulic Engineering Circular No. 18. FHWA NHI, 01-001
Sheppard DM, Melville B, Demir H (2013) Evaluation of existing equations for local scour at bridge piers. J Hydraul Eng 140(1):14–23
Sheppard DM, Odeh M, Glasser T (2004) Large scale clear-water local pier scour experiments. J Hydraul Eng 130(10):957–963
Sumer BM, Christiansen N, Fredsoe J (1992) Time scale of scour around a vertical pile. In: Second international offshore and polar engineering conference. International Society of Offshore and Polar Engineers
Yanmaz AM, Altinbilek HDGA (1991) Study of time-dependent local scour around bridge piers. J Hydraul Eng 117(10):1247–1268