پیوندهای مفید
آمار
| تعداد نشریات | 21 |
| تعداد شمارهها | 673 |
| تعداد مقالات | 9,832 |
| تعداد مشاهده مقاله | 69,828,683 |
| تعداد دریافت فایل اصل مقاله | 49,180,986 |
Experimental Comparison of Sacrificial Piles and Submerged Vanes as Scour Countermeasures around Bridge Pier | ||
| Journal of Rehabilitation in Civil Engineering | ||
| مقاله 11، دوره 7، شماره 1 - شماره پیاپی 13، اردیبهشت 2019، صفحه 110-123 اصل مقاله (1.3 M) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2018.11171.1184 | ||
| نویسنده | ||
| Nazanin Shahkarami* | ||
| Assistant Professor, Department of Civil Engineering, Faculty of Engineering, Arak University, Arak, Iran | ||
| تاریخ دریافت: 07 اردیبهشت 1396، تاریخ بازنگری: 08 آذر 1396، تاریخ پذیرش: 16 بهمن 1396 | ||
| چکیده | ||
| An experimental study has been conducted on the effectiveness of two types of flow-altering countermeasures placed around a cylindrical pier under clear water condition, which consists of sacrificial piles and submerged vanes. Their arrangements follow the optimal configurations recommended in the published articles with some modification. The temporal evolution of maximum scour depth and its equilibrium amount around the pile without and with two scour countermeasures were recorded; scour depth reduction rates and changes in bed topography were then computed. It can be concluded that pursuant to the result which has been earned from the experiments of this study, submerged vanes had better performances compare with the sacrificial piles in all of investigated aspects. By applying submerged vanes 75% of the scour only occurred in first 5 minute. Presence of submerged vanes played more efficient role in reducing scour depth as subjected scour depth reduction was 17% more than one subjected to sacrificial piles. The length of changes downstream the pier (L) were 12, 13.2 and 6 times of pier diameter (D) corresponding to pier with no protection, sacrificial piles and submerged vanes respectively, which revealed the effectiveness of submerged vanes in reducing the area affected by pier scour. Also the maximum changes of bed level were -6.9 cm to 3.9 cm in unprotected pier test, -4.4 to 3.5 cm in protection by sacrificial piles test and -3 to 3.2 cm in protection by submerged vanes. | ||
| کلیدواژهها | ||
| Countermeasures؛ Cylindrical Bridge Pier؛ Experimental Study؛ Sacrificial Piles؛ Submerged Vanes | ||
| مراجع | ||
|
[1] Azizi, R., Bejestan, M.S., Ghomeshi, M. (2012). “Scour depth at the edge of different submerged vanes shapes”. Journal of Applied Sciences, 12(4), 362–368. [2] Barbhuiya A. K., Dey S. (2004). Local scour at abutments: A review. Journal of Sadhana. 29(5): 449-476. [3] Beg, M., Beg, S. (2013), “Scour Reduction around Bridge Piers: A Review”, International Journal of Engineering Inventions, 2(7), 7-15. [4] Breusers، H. N. C. and Raudkivi, A. J. (1991). “Scouring. Hydraulic structures design manual”, Balkema Publication, Rotterdam, Netherlands, 143 pp. [5] Chabert J. and Engeldinger P. (1956). “Study scouring around bridge piers”. Report National Laboratory of Hydraulics, Chatou, France (in French). [6] Chiew Y. M. (1995). “Mechanics of riprap failure at bridge piers”, Journal of hydraulic engineering, 121(9): 635-643 [7] Chiew, Y.M. and Lim, S.Y. (2003). “Protection of bridge piers using a sacrificial sill”. Journal of proceeding of the Institution of Civil Engineers Water and Maritime Engineering, 156(1), 53-62. [8] Chiew, Y.M. and Melville B.W. (1987). “Local scour around bridge Piers”. Journal of hydraulic research, 25(1), 15-26. [9] Espa, P. and Magini, P. (2000). “Erosione localizzata al piede di ostacoli in alveo: studio sperimentale su un dispositivo di controllo”. ATTI XXVII Convegno di Idraulica e Costruzioni Idrauliche, Genova, Italy, CNR-GNDCI, 355–362 (in Italian). [10] Ghorbani, B., and Kells, J. A. (2008). “Effect of submerged vanes on the scour occurring at a cylindrical pier.” Journal of Hydraulic Research, 46(5), 610–619. [11] Grimaldi, C., Gaudio, R., Calomino, F., Cardoso, A. H. (2009). “Countermeasures against local scouring at bridge piers: Slot and combined system of slot and bed Sill”. Journal of Hydraulic Engineering, 135(5):425–431. [12] Hadfield, A. C. (1997). “Sacrificial piles as a bridge pier scour countermeasure”. M.E. thesis, Civil and Resource Engineering Department, The University of Auckland, Auckland, New Zealand. [13] Hager, W. H. and Oliveto, G. (2002). “Shields’ entrainment criterion in bridge hydraulics”. Journal of hydraulic engineering, 2002, 128 (5), 538-542. [14] Haque, M.A., Rahman, M. M., Islam G. M. T. and Hussain, M.A. (2007). “Scour mitigation at bridge piers using sacrificial piles”. International Journal of Sediment Research, 22(1), 49-59. [15] Jahangirzadeh, A., Basser, H., Akib S., Karami, H., Naji, S. and Shamshirband, S. (2014). “Experimental and numerical investigation of the effect of different shapes of collars on the reduction of scour around a single bridge pier”. Journal of Plos One, 9(6):98592. [16] Johnson P. A., Hey, R. D., Tessier, M. and Rosgen, D. L. (2001). “Use of vanes for control of scour at vertical wall abutments”. Journal of Hydraulic Engineering, 127(9).772-778. [17] Khaple, S., Hanmaiahgari, P. R. and Gaudio, R. (2017), “Splitter plate as a flow-altering pier scour countermeasure”, Journal of Acta Geophys, published online 18 September 2017. [18] Kumar, V., Raju, K. G. R. and Vittal, N. (1999). “Reduction of local scour around bridge piers using slots and collars”. Journal of Hydraulic Engineering, 125(12):1302–1305. [19] Lauchlan, C.S. (1999). “Pier scour countermeasures”. PhD Thesis. University of Auckland, Auckland, NZ. [20] Lee, S. O. and Sturm, T.W. (2009). “Effect of sediment size scaling on physical modelling of bridge pier scour”. Journal of hydraulic engineering, 135(10), 793-802 [21] Liang, S. D., Zhang, Y. L. and Yang J. (2015). “An experimental study on pile scour mitigating measures under waves and currents”. Journal of science china technological science, 58(6), 1031-1045. [22] Mellvile, B. W. (1997). “Pier and abutment scour. Integrated approach”. Journal of hydraulic engineering, 132(2), 125-136. [23] Melville, B.W. and Coleman, S.E. (2000). “Bridge scour”. Water Resources Publication, Colorado, USA, 550pp. [24] Melville, B. W. and Chiew, Y. M. (1999). “Time scale for local scour at bridge piers”. Journal of Hydraulic Engineering, 125(1), 59–65. [25] Melville B.W. and Hadfield A.C. (1999). “Use of sacrificial piles as pier scour countermeasures”. Journal of Hydraulic Engineering, 125(11), 1221–1224. [26] Odgaard, A.J. and Wang, Y. (1991). “Sediment management with submerged vanes I: Theory”. Journal of Hydraulic Engineering, 117(3), 267–283. [27] Ouyang, H. (2009). “Investigation on the dimensions and shape of a submerged vane for sediment management in alluvial channels”. Journal of Hydraulic Engineering, 135(3), 209–217. [28] Ouyang H. T. and Lin C. P. (2016). “Characteristics of interactions among a row of submerged vanes in various shapes”. Journal of Hydro-environment Research, 13,14–25. [29] Park, J. H., Sok, C., Park, C. K. and Kim, Y.D. (2016). “A study on the effects of debris accumulation at sacrificial piles on bridge pier scour: Experimental results”. KSCE Journal of Civil Engineering, 20(4), 1546-1551. [30] Raudkivi, A. J. (1990). “Loose Boundary Hydraulics”. 3rd edition, published 1990 by Pergamon Press: Headington Hill Hall, Oxford, UK, 512 pp. [31] Raudkivi, A. J. and Ettema R. (1983). “Clear water scour at cylindrical piers”. Journal of hydraulic engineering, 109(3), 338-35. [32] Samimi Behbahan, T. (2011). “Laboratory investigation of submerged vane shapes effect on river banks protection”. Australian Journal of Basic and Applied Sciences, 5(12), 1402–1407. [33] Shojaee, P., Farsadizadeh, D., Hoseinzadeh Dalir, A., Salmasi, F. and Ghorbani, M. A. (2012). “Application of Submerged Vanes at Cylindrical Bridge Pier as a Scour Countermeasure”. Journal of water and science, 22(1), 91-108 (in Persian). [34] Tan, S., Yu, G., Lim, S., Ong M. C. (2005). “Flow structure and sediment motion around submerged vanes in open channel”. Journal of Waterway, Port, Coastal, and Ocean Engineering, 131(3), 132–136. [35] Tafarojnoruz A., Gaudio R. and Dey S. (2010). “Flow- altering countermeasures against scour at bridge piers: a review”. Journal of hydraulic research, 48(4), 441-452. [36] Tafarojnoruz, A., Gaudio, R. and Calomino, F. (2012). “Control evaluation of flow-altering countermeasures against bridge pier scour”. Journal of hydraulic engineering, 138(3), 297-305. [37] Wardhana, K. and Hadipriono, F. (2003). “Analysis of Recent Bridge Failures in the United States”. Journal of Performance of Constructed Facilities, 17(3), 144-150. [38] Zarrati A. R., Gholami, H. and Mashahir, M. B. (2004). “Application of collar to control scouring around rectangular bridge piers”. Journal of hydraulic research, 42(1), 97–103. | ||
|
آمار تعداد مشاهده مقاله: 1,049 تعداد دریافت فایل اصل مقاله: 698 |
||