Ecology and Resilient Infrastructure

Korean Society of Ecology and Infrastructure Engineering (응용생태공학회)
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Experimental Analysis on the Behavior of Alternate Bars in a Channel with a Spur Dike

수제의 길이 변화에 의한 교호사주의 거동 분석 실험

  • Jang, Chang-Lae (Department of Civil Engineering, Korea National University of Transportation) ;
  • Song, Youngjin (Department of Civil Engineering, Korea National University of Transportation)
  • 장창래 (한국교통대학교 토목공학과) ;
  • 송영진 (한국교통대학교 토목공학과)
  • Received : 2016.02.11
  • Accepted : 2016.03.20
  • Published : 2016.03.31
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Abstract

This study investigated the effects of a spur dike on the development processes, the migration, and the wave length of alternate bars with laboratory experiments. The bar wave length was shown to be shorter as the spur dikes got longer. The forcing effects of a long spur dike on the behavior of alternate bars were stronger than those of a shorter one. However, the bar height was not affected by the variation of the length of a spur dike. The bar migration speed was in inverse proportion to the bar wave length.

본 연구에서는 수제의 길이 변화에 의하여 교호사주의 형성, 사주의 이동과 정지, 사주의 파장에 미치는 영향을 실내실험을 통하여 분석하였다. 수제의 길이가 길어질수록 사주의 이동거리와 파장은 짧아지고, 이동속도는 감소하였다. 수제의 길이가 길수록 사주에 작용하는 강제효과가 강하게 작용하였다. 사주의 파고는 수제의 길이 변화에 크게 영향을 받지 않으며, 거의 일정하게 유지되었다. 그러나 사주의 파장이 감소하면 사주의 이동속도는 증가하며, 사주의 파장과 사주의 이동속도는 반비례 관계를 형성하였다.

Keywords

References

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