Author(s): J.P. Martin-Vide; J.M. Prio

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Keywords: Backwater; bridge; afflux; arch; scour

Abstract: Experimental research on backwater effects in semicircular arch bridges is reported. Both pressurized and free-surface flows at the bridge were investigated. Flows on a mobile bed in clear-water conditions were compared to those with a rigid bed. Methodologies for backwater computation by Yarnell, the US Geological Survey, the US Department of Transportation and the HEC-RAS model were compared with the experimental data. A simple expression for the head loss coefficient as a function of the obstructed bridge area is derived.

DOI: https://doi.org/10.1080/00221680509500149

Year: 2005