Investigation of bridge afflux on channels by experiments and HEC-RAS package

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    The bridges are an important part of the transportation network which is constructed over rivers and canals in the urban. The water surface increases upstream of the bridge and constitutes a backwater profile. The maximum afflux and location were investigated via using model test experiments and three different methods by using HEC-RAS package. Laboratory experiments were carried out at ten different flow rates and smooth flow conditions. Measurements and numerical calculations are performed for four different opening ratio M=b/B= 0.3, 0.5, 0.7 and 0.9 where b is the bridge opening and B is the cross-section width. The HEC-RAS package was determined to be closer to the measured values for maximum afflux and wsp (water surface profiles) for large openings. When the opening ratio increases, the distances where maximum affluxes observed also shifted to upstream of the channel.




  • Keywords

    Bridge Afflux; Channel; Opening Ratio; Flow Rate; HEC-RAS.

  • References

      [1] A. M. Yanmaz, Bridge Hydraulics, Metu Press, Ankara, Turkey, 2002.

      [2] P.M. Brown, Afflux at arch bridges, Hydraulic Research Wallingford, Wallingford, UK, Report SR 182. 1988.

      [3] H.K. Liu, J.N. Bradley, and E.J. Plate, Backwater effects of piers and abutments. Rep. CER57HKL10, Civil Engineering Section, Colorado State Univ., Fort Collins, Colo. 1957.

      [4] P.F. Biery, and J.W. Delleur, Hydraulics of Single Span Arch Bridge Constrictions. Journal of the Hydraulics Division, ASCE, No HY2, Pt 1, 1962, pp. 75-108.

      [5] K.J. Kaatz, and W.P. James, Analysis of alternatives for computing backwater at bridges. ASCE Journal of Hydraulic, Engineering, 123: 1997, pp. 784–792.

      [6] G. Seçkin, S. Atabay, K. S. Erduran, and R. Yurtal, Determination of the backwater due to bridges on rivers, IMO Technical Journal, 2000, pp.2231-2240.

      [7] G. Seçkin, M. Ardiclioglu, M. Mamak, and S. Atabay, Bridge Afflux in Compound Channels. Indian J. of Engineering and Materials Sciences, 10, 2003, pp. 458-464.

      [8] G. Seçkin, N. Önal, and M. Ardiclioglu, Modelling of water surface profile throughout a bridge pier, Anadolu University Journal of Science and technology, 4, No 2, 2003, pp 257-264.

      [9] M. Ardiclioglu, G. Seçkin, and S. Seçilir, Experimental investigation of the effects of bridge structures on maximum afflux on rivers, Proceedings of the Fifth GAP Engineering Congress, Şanlıurfa, Turkey,2006.

      [10] S. Kocaman, G. Seçkin, and K.S. Erduran, Estimation of bridge backwater using 3D numerical Model, V. Water Eng. Symposium, İstanbul, Turkey, 2011.

      [11] S. Atabay, K. Haji Amou Assar, M. Hashemi, and M. Dib, Prediction of the backwater level due to bridge constriction in waterways. Water and Environment Journal, 32(1), 2018, pp. 94-103.

      [12] B. Naik, K. K. Khatua, N. Wright, A. Sleigh, and P. Singh, Numerical modeling of converging compound channel flow. ISH Journal of Hydraulic Engineering, 24(3), 2018, pp. 285-297.

      [13] G. W. Brunner, HEC-RAS river analysis system: hydraulic reference manual. US Army Corps of Engineers, Institute for Water Resources, Hydrologic Engineering Center, 2010.




Article ID: 21068
DOI: 10.14419/ijet.v7i4.21068

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.