MAXIMUM SCOUR DEPTH AT SUBMERGED SKEWED BRIDGE AND PIER

Authors

  • Amirsaeed Farhangi Department of Civil Engineering, University Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
  • Ahmad Mohammad Ali Thamer Department of Civil Engineering, University Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
  • Abdul Halim Ghazali Department of Civil Engineering, University Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
  • Badronnisa Yusuf Department of Civil Engineering, University Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia

DOI:

https://doi.org/10.11113/mjce.v28.15702

Keywords:

Bridge pier, bridge thickness, maximum scours depth, submerged bridge

Abstract

Maximum local scour depth around pier due to the submerged skewed bridge along with its rectangular pier under clear water condition has been experimentally studied. In present study, twenty four tests were carried out including; six various aligned bridge models with the different angles such as; 0, 5, 10, 15, 22.5 and 30 degree to the presumptive perpendicular line to the flume wall under two flow types of fully and partially submerged bridge above two different median sizes of uniform sediments. However, in the present study, aligned factor in pressure flow is experimentally evaluated, its results are much less than aligned factor in free flow in the same ratio of rectangular pier length to the pier width. Also, the relationship between dependent and independent variables firstly was determined. Thereafter, an equation was acceptably proposed by using dimensional analysis, collected data and multiple linear regressions.

References

Arneson, L.A ( ) “Th o pr ur - low on lo l our in bri g op ning †Ph.D. thesis, Dept. of Civil Engineering, Colorado State University, Fort Collins, CO.

Briaud, J. L., Gardoni, P., and Yao, C., (2014). Statistical, Risk, and Reliability Analyses of Bridge Scour. Journal of Geotechnical and Geoenvironmental Engineering, 140: 1-10

Ettema, R., Melville, B. W., and Barkdole, B., (1998a). Scale Effect in Pier- Scour Experiments. Journal of Hydraulic Hydraulic Engineering, 124: 639-642.

Ettema, R., Mostafa, E. A., Melville, B. W., and Yassin, A. A., (1998b). Local Scour at Skewed Piers. Journal of Hydraulic Engineering, 124: 756-759.

Guo, J., Kerenyi, K., Pagan-Ortiz, J.E., Flora, K., and Afzal, B., (2010). Submerged- Flow Bridge Scour under Maximum Clear- Water Condition (I). San Francisco, 5th international conference on scour and erosion, 807-814.

Lyn, D. A., (2008). Pressure-Flow Scour: A Reexamination of the HEC-18 Equation. Journal of Hydraulic Engineering, 134: 1015- 1020.

Masjedi, A., Shafaei Bejestan, M. and Esfandi, A., (2010). Reduction of local scour at a bridge pier fitted with a collar in a 180 degree flume bend (Case study: oblong pier). journal of Hydrodynamics, 22: 669–673.

Melville, B., (2008). The Physics of Local Scour at Bridge Piers. Tokyo, Fourth International Conference on Scour and Erosion, 28-40

Melville, B. W. and Chiew, Y.M., (1999). Time scale for local scour at bridge piers. Journal of Hydraulic Engineering, 125: 59- 65.

Melville, B. W. and Coleman, S. E., (2000) Bridge Scour. Auckland: Water Resources Publication, LLC., 192 pp.

Pal, M., Singh, N. K. and Tiwari, N. K., (2012). M5 Model Tree for Pier Scour Prediction Using Field Dataset. Journal of Civil Engineering, 16: 1079-1084.

Sarkar, K., Chakraborty, C. and Mazumder, B. S., (2015). Spacetime dynamics of bed forms due to turbulence around submerged bridge piers. Stoch Environ Res Risk Assess, 29: 995-1017.

Shen, J., Shan, H., Suaznabar, O., Suaznabar, O., Zhaoding, X., Bojanowski, C., Lottes, S., and Kerenyi, K., (2012). Submerged-flow bridge scour under clear-water conditions. ICSE6 Paris, 755-760.

Umbrell, E. R., Kenneth Young, G., Stein, S. M. and Sterling Jones, J., (1998). Clear-water contraction scour under bridges in pressure flow. Journal of Hydraulic Engineering, 124: 236- 240.

Verma, D. S., Setia, B. and Bhatia, U., (2004). Constriction scour in pressurized flow condition. International Journal of Engineering-Transactions, 17: 237-246.

Zarrati, A. R., Chamani, M. R., Shafaie, A. and Latifi, M., (2010). Scour countermeasures for cylindrical piers using riprap and combination of collar and riprap. Sediment Research, 25: 313-321.

Downloads

Published

2018-03-29

Issue

Section

Articles

How to Cite

MAXIMUM SCOUR DEPTH AT SUBMERGED SKEWED BRIDGE AND PIER. (2018). Malaysian Journal of Civil Engineering, 28(1). https://doi.org/10.11113/mjce.v28.15702