Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Failure Probability Assessment for Risk Analysis of Concrete Gravity Dam under Flood

홍수 시 콘크리트 중력식댐의 위험도 분석을 위한 파괴확률 산정

  • 조수진 (서울시립대학교 토목공학과) ;
  • 신성우 (부경대학교 안전공학과) ;
  • 심성한 (울산과학기술원 도시환경공학부) ;
  • 임정열 (한국수자원공사 연구원)
  • Received : 2016.08.31
  • Accepted : 2016.11.04
  • Published : 2016.12.31
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Abstract

This study aims to estimate the failure probability of concrete gravity dams for their risk analysis under flood situation. To the end, failure modes of concrete gravity dams and their limit state functions are proposed based on numerous review of domestic and international literatures on the dam failure cases and design standards. Three failure modes are proposed: overturning, sliding, and overstress. Based on the failure modes the limit state functions, the failure probability is assessed for a weir section and a non-weir section of a dam in Korea. As water level is rising from operational condition to extreme flood condition, the failure probability is found to be raised up to the warning condition, especially for overturning mode at the non-weir section. The result can be used to reduce the risk of the dam by random environmental variables under possible flood situation.

Keywords

References

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