New Paradigm on the Safety Check of Concrete Gravity Dams at Earthquake

중력식댐의 지진시 안전검토에 대한 뉴 패러다임

  • Bae, Jung-Joo (Korea Infrastructure Safety and Technology Corporation) ;
  • Kim, Yon-Gon (Department of Safety Engineering, Hankyong National University) ;
  • Lee, Jee-Ho (Department of Civil and Environment Engineering, Dong-Guk University)
  • 배정주 (한국시설안전기술공단) ;
  • 김용곤 (한경대학교 안전공학과) ;
  • 이지호 (동국대학교 토목환경공학과)
  • Published : 2009.12.31

Abstract

In the safety check of gravity dams at earthquake, there have been two types of analysis conducted simultaneously; one is stability analysis and the other stress analysis. But those are essentially the same calculation other than the former considers the dams rigid, while the latter considers the dams' dynamic characteristics which results in the amplification of response acceleration on the upper part of dam body. In this paper, the identity of those two methods is verified by example calculation in terms of stability check of gravity dam. It can be concluded that if stress analysis were performed, stability check of gravity dam could be accomplished with the results from stress analysis, removing unnecessary present dual calculation practice.

References

  1. Panel on earthquake engineering for concrete dams, Earthquake engineering for concrete dams : Design, performance, and research needs, National research council, pp. 46, 1990
  2. 국토해양부, 안전점검 및 정밀안전진단 세부지침(댐편), pp. 220, 2009
  3. Chopra, A.K., EAGD-SLIDE : a computer program for the earthquake analysis of concrete gravity dams including base sliding, Report No. UCB/SEMM-1994/02, 1994
  4. 건설교통부, 기존 댐의 내진성능 평가 및 향상 요령, pp. 67, 2004
  5. Chopra, A.K., Earthquake resistant design of concrete gravity dams, Journal of structural division, ASCE, Vol. 104, No. ST6, pp. 953-971, 1978
  6. 한국수자원학회, 댐 설계기준, pp. 453, 2005