Experimental investigation of local scour under two oblong piers of a bridge crossing a sharp bend river

• Autorzy: Abdulwahd Abdulrazaq K. , Maatooq Jaafar S.

Identyfikatory

DOI

10.24425/jwld.2023.146605

• Języki publikacji: EN

Abstrakty

EN

Bridges built across a river bend and supported by more than one pier has been experimentally studied regarding the shape and nature of erosion and deposition. For this purpose, a U-shaped laboratory channel was used with two oblong piers installed at different locations. The first one was at the mid-section of the upstream straight reach, whereas in the second site within the bend, the piers have been installed at sections of central angles 0°, 30°, 60°, 90°, 120°, 150°, 170°, and 180°, from the beginning to the end of the bend segment respectively. The studies were conducted under clear water and threshold flow conditions. The results show that the higher and lower values of local scour around the pier positioned close to the outer bank, are 1.803 and 0.623 times the pier width when the bridge was installed at an angle of 90° and 30° respectively. As for the pier close to the inner bank, the deepest local scour was 1.786 times of the pier width when the bridge was installed at 60° of the bend, while the least one was 0.516 times of the pier width when the bridge was located in the 180° sector. It is worth noting that the presence of piers within sector 150 is less affected by local scour than in the other sections.

Słowa kluczowe

EN

flow intensity; local scour; oblong pier; sharp bend

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2023
• Tom: no. 58
• Strony: 129--135
• Opis fizyczny: Bibliogr. 30 poz., rys., wykr.

Twórcy

autor

Abdulwahd Abdulrazaq K.

• University of Technology, Civil Engineering Department, Al-sina’a St, P.O Box 19006, Baghdad, Iraq

• https://orcid.org/0000-0002-8793-2454

autor

Maatooq Jaafar S.

• University of Technology, Civil Engineering Department, Al-sina’a St, P.O Box 19006, Baghdad, Iraq

• https://orcid.org/0000-0003-3085-0893

Bibliografia

• Asadollahi, M., Vaghefi, M. and Akbari, M. (2020) “Effect of the position of perpendicular pier groups in a sharp bend on flow and scour patterns: Numerical simulation,” Journal of the Brazilian Society of Mechanical Sciences and Engineering, 42, 422. Available at: https://doi.org/10.1007/s40430-020-02503-2.
• Asadollahi, M., Vaghefi, M. and Tabibnejad Motlagh, M.J. (2021) “Experimental and numerical comparison of flow and scour patterns around a single and triple bridge piers located at a 180-degree sharp bend,” Scientia Iranica, 28, pp. 2479–2492. Available at: https://doi.org/10.24200/SCI.2019.5637.1391.
• Ben Mohammad Khajeh, S., Vaghefi, M. and Mahmoudi, A. (2017) “The scour pattern around an inclined cylindrical pier in a Sharp 180-degree bend: an experimental study,” International Journal of River Basin Management, 15, pp. 207–218. Available at: https://doi.org/10.1080/15715124.2016.1274322.
• Carmo do, J.S.A. (2005) “Experimental study on local scour around bridge piers in rivers,” WIT Transactions on Ecology and the Environment, 83, pp. 1–11. Available at: https://www.witpress.com/Secure/elibrary/papers/RM05/RM05001FU.pdf (Accessed: August 20, 2022).
• Chiew, Y.M. and Melville, B. (1987) “Local scour around bridge piers,” Journal of Hydraulic Research, 25, pp. 15–26. Available at: https://doi.org/10.1080/00221688709499285.
• Chooplou, C.A. and Vaghefi, M. (2019) “Experimental study of the effect of displacement of vanes submerged at channel width on distribution of velocity and shear stress in a 180 degree bend,” Journal of Applied Fluid Mechanics, 12, pp. 1417–1428. Available at: https://doi.org/10.29252/JAFM.12.05.29329.
• Eghbalnik, L., Vaghefi, M. and Golbaharhaghighi, M.R. (2019) “Laboratory study of the temporal evolution of channel bed topography in presence of two rows of inclined-vertical piers in a sharp 180-degree bend,” ISH Journal of Hydraulic Engineering, 28, pp. 49–56. Available at: https://doi.org/10.1080/09715010.2019.1674700.
• Emami, Y., Salamatian, S. and Ghodsian, M. (2008) “Scour at cylindrical bridge pier in a 180 degree channel bend,” in H. Sekiguchi (ed.) Proceedings 4th International Conference on Scour and Erosion (ICSE-4). November 5–7, 2008 Tokyo: The Japanese Geotechnical Society, pp. 256–262. Available at: https://hdl.handle.net/20.500.11970/100126 (Accessed: May 9, 2022).
• Heidarnejad, M., Bajestan, M.S. and Masjedi, A. (2010) “The effect of slots on scouring around piers in different positions of 180-degrees bends,” World Applied Sciences Journal, 8(7), pp. 892–899. Available at: http://www.idosi.org/wasj/wasj8(7)10/18.pdf (Accessed: Murch 26, 2022).
• Keshavarz A., Vaghefi, M. and Ahmadi, G. (2022) “Investigation of flow pattern around rectangular and oblong piers with 1 collar located in a 180° sharp bend,” Scientia Iranica, 28(5), pp. 2479–2492. Available at: https://doi.org/10.24200/sci.2021.55320.4169.
• Kothyari, U.C. and Kumar, A. (2010) “Temporal variation of scour around circular bridge piers,” ISH Journal of Hydraulic Engineering, 16, pp. 35–48. Available at: https://doi.org/10.1080/09715010.2010.10515014.
• Leschziner, M.A. and Rodi, W. (1979) “Calculation of strongly curved open channel flow,” Journal of the Hydraulics Division, 105, pp. 1297–1314. Available at: https://doi.org/10.1061/JYCEAJ.0005286.
• Maatooq, J.S. and Hameed, L. (2019) “Identifying the pool-point bar location based on experimental investigation,” Journal of Water and Land Development, 43, pp. 106–112. Available at: https://doi.org/10.2478/jwld-2019-0068.
• Maatooq, J.S. and Mahmoud, E.S. (2017) “Local scour around single central oblong bridge piers located within 180° bend,” International Journal of Hydraulic Engineering, 6, pp. 16–23. Available at: https:/doi.org/10.5923/j.ijhe.20170601.03.
• Masjedi, A., Zeraat, B. and Hydarnejad, M. (2011) “Experimental study on effect of ogival bridge pier on scour hole depth,” AIP Conference Proceedings, 1376, pp. 427–429. Available at: https://doi.org/10.1063/1.3651937.
• Melville, B.W. (1997) “Pier and abutment scour: Integrated approach,” Journal of Hydraulic Engineering, 123(2), pp. 125–136. Available at: https:/doi.org/10.1061/(asce)0733-9429(1997)123:2(125).
• Melville, B.W. and Sutherland, A.J. (1988) “Design method for local scour at bridge piers,” Journal of Hydraulic Engineering, 114, pp. 1210–1226. Available at: https://doi.org/10.1061/(ASCE) 0733-9429(1988)114:10(1210).
• Moghaddassi, N. et al. (2021) “Effect of mean velocity-to-critical velocity ratios on bed topography and incipient motion in a meandering channel: Experimental investigation,” Water, 13(7), 883. Available at: https://doi.org/10.3390/w13070883.
• Muhsen, N. and Khassaf, S.I. (2022) “The study of the local scour behaviour due to interference between abutment and two shapes of a bridge pier,” Journal of Water and Land Development, 55, pp. 240–250. Available at: https://doi.org/10.24425/jwld.2022.142327.
• Oveici, E., Tayari, O. and Jalalkamali, N. (2020) “Experimental (ADV & PIV) and numerical (CFD) comparisons of 3D flow pattern around intact and damaged bridge piers,” Pertanika Journal of Science and Technology, 28, pp. 523–544. Available at: http://journals-jd.upm.edu.my/resources/files/Pertanika%20PAPERS/JST%20Vol.%2028%20(2)%20Apr.%202020/07%20JST-1846-2019.pdf (Accessed: October 20, 2022).
• Rasaei, M., Nazari, S. and Eslamian, S. (2020) “Experimental and numerical investigation the effect of pier position on local scouring around bridge pier at a 90° convergent bend,” Journal of Hydraulic Structures, 6, pp. 55–76. Available at: https://doi.org/10.22055/jhs.2020.32753.1134.
• Raudkivi, A.J. and Ettema, R. (1983) “Clear-water scour at cylindrical piers,” Journal of Hydraulic Engineering of ASCE, 109(3), pp. 338–350. Available at: https://doi.org/10.1061/(ASCE)0733-9429(1983)109:3(338).
• Richardson, E.V. (2002) “Instruments to measure and monitor bridge scour,” in H.-C. Chen, J.-L. Briaud (eds.) First International Conference on Scour of Foundations. November 17–20, 2002, College Station, USA, pp. 993–1007. Available at: https://hdl.handle.net/20.500.11970/100398 (Accessed: February 22, 2023).
• Richardson, E.V. and Davis, N.D. (2001) “Evaluating scour at bridges,” 4th ed. Report No. FHWA NHI 01-001. Hydraulic Engineering Circular Number 18. Washington, DC: United States. Federal Highway Administration. Office of Bridge Technology; National Highway Institute (U.S.). Available at: https://rosap.ntl.bts.gov/view/dot/50281 (Accessed: February 22, 2023).
• Sedighi, F., Vaghefi, M. and Ahmadi, G. (2021) “The effect of inclined pair piers on bed topography: Clear water, incipient motion and live bed,” Iranian Journal of Science and Technology – Transactions of Civil Engineering, 45, pp. 1871–1890. Available at: https://doi.org/10.1007/s40996-020-00481-y.
• Solati, S., Vaghefi, M. and Behroozi, A.M. (2020) “Effect of duration and pattern of hydrographs on scour around pier in sharp bend under incipient motion and live bed conditions,” International Journal of Civil Engineering, 19, pp. 51–65. Available at: https://doi.org/10.1007/s40999-020-00558-9.
• Vaghefi, M., Akbari, M. and Fiouz, A.R. (2016) “An experimental study of mean and turbulent flow in a 180 degree sharp open channel bend: Secondary flow and bed shear stress,” KSCE Journal of Civil Engineering, 20, pp. 1582–1593. Available at: https://doi.org/10.1007/s12205-015-1560-0.
• Vaghefi, M. et al. (2017) “Experimental study of the effect of base-level fall at the beginning of the bend on reduction of scour around a rectangular bridge pier located in the 180 degree sharp bend,” Journal of Hydraulic Structures, 3, pp. 32–46. Available at: https://doi.org/10.22055/jhs.2018.24900.1065.
• Vaghefi, M. et al. (2018) “Experimental study of bed topography variations due to placement of a triad series of vertical piers at different positions in a 180° bend,” Arabian Journal of Geosciences, 11, 102. Available at: https://doi.org/10.1007/s12517-018-3443-4.
• Wang, H. et al. (2016) “Clear-water local scouring around three piers in a tandem arrangement,” Science China Technological Sciences, 59,pp. 888–896. Available at: https://doi.org/10.1007/s11431-015-5905-1.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).