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http://dx.doi.org/10.3741/JKWRA.2004.37.9.781

The Variation of Channel Bed by Location of Pier near 90° Channel Junction  

Choi, Gye-Woon (인천대학교 공과대학 토목환경시스템공학과)
Kim, Young-Kyu (인천대학교 공과대학 토목환경시스템공학과)
Kim, Gee-Hyoung (인천발전연구원 환경생태연구실)
Publication Information
Journal of Korea Water Resources Association / v.37, no.9, 2004 , pp. 781-787 More about this Journal
Abstract
The variation of channel bed which shows the complex hydraulic characteristics at channel junction was investigated by variation of discharge ratio and location of pier. As discharge ratio increase, the depth and width of erosion region become bigger to point of 63% of channel width in case of 1:0.5 discharge ratio. It was observed that the maximum scour depth at the point of 0.5 times of the channel width in the channel junction as 2.5 times bigger than straight channel. It means that the maximum scour depth at the channel junction is 2 times greater than by experimental formulas which are widely used in practical engineering, location of pier should be determined when it is installed in channel junction.
Keywords
channel junction; variation of channel bed; pier scour; maximum scour depth; discharge ratio;
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