Temporal scour development at bridge abutments with a collar

Kumcu, Serife Yurdaguel
Goegues, Mustafa
Koekpinar, Mehmet Ali
This study investigated the reduction of scour around a vertical-wall bridge abutment using rectangular collars for clear-water flow conditions over uniform sediment particles in a laboratory flume. Collars of different sizes and at different elevations were tested to determine the temporal variation of scour depth around the bridge abutment. The development of scour around the abutments with and without a collar for a time period of 6 h was studied, and observed scour depths were compared. Experimental results showed that, in addition to protecting the abutments against erosion, the addition of a collar is effective in reducing the rate of temporal scour development. A comparison of the present results with those from previous studies revealed that the effectiveness of a collar increases with a decrease in the elevation of the collar and an increase in the width of the collar.


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Bozkuş, Zafer (Canadian Science Publishing, 2010-12-01)
The aim of this experimental study is to examine the effect of inclination of dual bridge piers on scour depth under clear-water conditions for various uniform flow depths. Duration of 4 h was used in the experiments for each run. Scour depths were measured at four different points around the piers. The depths of local scour around inclined piers were found to be substantially smaller than the scour depths around vertical piers. Dimensional and nondimensional curves were developed and presented to show the ...
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Citation Formats
S. Y. Kumcu, M. Goegues, and M. A. Koekpinar, “Temporal scour development at bridge abutments with a collar,” CANADIAN JOURNAL OF CIVIL ENGINEERING, pp. 549–556, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66190.