Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Study on The Bed Scour at Stream Bridge during Flood - In the case of Jeongjang Bridge in Gurye -

홍수시 소하천 교량에서의 하상세굴 연구 - 구례 정장교를 중심으로 -

  • Jung, Jae-Sung (Division of Civil & Environmental Engineering, Sunchon National University) ;
  • Chung, Mahn (Dept. of Civil & Environmental Engineering, Yosu National University) ;
  • Kim, Min-Hwan (Dept. of Civil & Environmental Engineering, Honam University)
  • 정재성 (순천대학교 토목환경공학부) ;
  • 정만 (여수대학교 토목환경공학부) ;
  • 김민환 (호남대학교 토목환경공학부)
  • Published : 2002.10.01
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Abstract

The hydrological frequency of the flood in July 2000 at Seosi stream basin in Gurye and the bed scour of the stream channel were estimated to investigate the bed scour related with Jeongjang bridge collapse. The storm over the basin in July 2000, 303mm/day was 103year frequency rainfall and the equivalent flood was 2580cms. As the results of 100year and 30year flood application, flood level 30.78~31.38m and mean velocity 3.79~4.03m/s were appeared. And the purification project of Seosi stream increased the velocity of the section near to Jeongjang bridge by the improvement of conveyance at the downstream. The local scour at pier was the major factor of bed scour at Jeongjang bridge site and the total scour at pier No.6 was increased from 2.32m to 2.45m by the purification project.

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References

  1. 구례군, 2000, 구례통계연보, 19-74.
  2. 구례군, 2000, 정장교 호우피해 조사보고.
  3. 전라남도, 1993, 하천정비기본계획(토지천, 마산천, 송광천, 내북천).
  4. U.S. NWS, 1963, Rainfall frequency atlas of United States for durations from 30 minutes to 24 hours and return period from 1 to 100 years, U.S. Weather Bureau Technical Paper, 4.
  5. 섬진강홍수통제소, 2000, 섬진강홍수예경보, 건설교통부, 89-128.
  6. Debruin, H.A.R., 1976, The accuracy of measuring precipitation with a rain gauge network, Proceedings of Technical Meeting 33, Committee for Hydrological Research TNO, Netherlands.
  7. 전라남도, 1989, 하천정비기본계획(서시천, 무동천, 수락천, 무은천, 용정천, 천은천, 백연천).
  8. HEC, 1998, HEC-RAS River Analysis System, Ver.2.2 Hydraulic Reference Manual, US Army Corps of Engineers.
  9. Laursen, E.M., 1963, An Analysis of Relief Bridges, ASCE, Journal of Hydraulic Engineering, 92(HY3).
  10. Richardson, E.Y., D.B. Simons, and P. Julien, 1990, Highways in the River Environment, Federal Highway Administration, U.S. Department of Transportation.
  11. Froehlich, D.C., 1989, Local Scour at Bridge Abutments, Proceedings of the 1989 National Conference on Hydraulic Engineering, ASCE, 13-18.