The Model to Generate Optimum Maintenance Scenario for Steel Bridges considering Life-Cycle Cost and Performance

강교량의 최적 유지관리 시나리오 선정 모델

  • 박경훈 (한국건설기술연구원 구조연구부) ;
  • 이상윤 (한국건설기술연구원 구조연구부) ;
  • 김정호 (한국건설기술연구원 구조연구부) ;
  • 조효남 (한양대학교 토목환경공학과) ;
  • 공정식 (고려대학교 사회환경시스템공학과)
  • Received : 2006.07.14
  • Accepted : 2006.11.21
  • Published : 2006.12.27


In this paper, a more practical and realistic method is proposed to establish the lifetime optimum maintenance strategies of the deteriorating bridges considering the life-cycle performance as well as life-cycle cost. The genetic algorithm is applied to generate the set of maintenance scenarios that is the multi-objective combinatorial optimization problem related to lifetime performance and cost as separate objective functions, and the technique to select optimum tradeoff maintenance scenario is presented. Optimum maintenance scenarios could be generated not only at the individual member level but also at the system level of the bridge. Through the analytical results of applying the proposed methodology to the existing bridge, it is expected that the methodology will be effectively used to determine the optimum maintenance strategy for introducing a real preventive maintenance system and overcoming the limits of existing maintenance methods.


Grant : 강교량의 최적설계와 경제적 유지관리를 위한 Life-Cycle Cost

Supported by : 건설교통부/한국건설교통기술평가원


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