Bridge Abutment Scour in a Floodplainby Terry W. Sturm, Georgia Inst of Technology, Atlanta, United States,
Nazar Sadiq Janjua, Georgia Inst of Technology, Atlanta, United States,
Document Type: Proceeding Paper
Part of: Hydraulic Engineering
Recent bridge failures due to pier and abutment scour have reinforced the need for better methods of scour prediction. This paper addresses the problem of prediction of clear-water scour at an abutment which terminates in the floodplain of a compound channel. An experimental study was conducted in a wide flume with a defined main channel adjoining a floodplain with movable bed. A proposed relationship for the abutment scour depth is suggested from dimensional analysis, and it is shown from a regression analysis that the scour data are well represented by the proposed relationship.
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