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Life-Cycle Cost Optimization of Steel Box Girder Bridges  

조효남 (한양대학교 토목·환경공학과)
민대홍 (안산공과대학교)
권우성 (동일기술공사)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.15, no.4, 2002 , pp. 557-566 More about this Journal
Abstract
This paper presents an optimum deck and girder system design for minimizing the life-cycle cost(LCC) of steel box girder bridges. The problem of optimum LCC design of steel box girder bridges is formulated as that of minimization of the expected total LCC that consists of initial cost, maintenance cost and expected retrofit costs for strength, deflection and crack. To demonstrate the cost effectiveness of LCC design of steel box girder bridges, the LCC optimum design is compared with conventional design method for steel box girder bridges. From the numerical investigations, it may be positively stated that the optimum design of steel box girder bridges based on LCC will lead to mote rational, economical and safer design.
Keywords
life-cycle cost(LCC); optimization; steel box girder bridges;
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