Author(s): P. F. Lagasse; P. E. Clopper; L. W. Zevenbergen
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Keywords: No Keywords
Abstract: Waterborne debris (or drift) often accumulates on bridges during flood events. The effects can vary from minor flow constrictions to severe flow contraction resulting in significant bridge foundation scour. Currently, there is only limited guidance available on which to base critical public safety decisions during flooding on debrisprone rivers. National Cooperative Highway Research Program (NCHRP) Project24-26, "Impacts of Debris on Bridge Pier Scour" produced results on two related problems: predicting the accumulation characteristics of debris from widely varying source areas, and developing improved methods for quantifying the depth of scour at bridge piers. This paper concentrates on the development of an improved algorithm for predicting the depth of scour at debris-laden bridge piers.
Year: 2009