[KSCI] Korea Science Citation Index Service

Optimum Life-Cycle Cost Design of Steel Bridges

Cho, Hyo-Nam (한양대학교 공학대학)
Lee, Kwang-Min (한양대학교 대학원)
Kim, Jung-Ho (건설기술연구원)
Choi, Young-Min (한양대학교 공학대학)
Bong, Youn-Jong (한양대학교 대학원)

Publication Information

Journal of Korean Society of Steel Construction / v.15, no.4, 2003 , pp. 341-358 More about this Journal

Abstract

This paper proposed a general formulation of Life-Cycle Cost (LCC) models and LCC effective design system models of steel bridges suitable for practical implementation. An LCC model for the optimum design of steel bridges included initial cost and direct/indirect rehabilitation costs of a steel bridge as well as repair/replacement costs, loss of contents or fatality and injury losses, road user costs, and indirect socioeconomic losses. The new road user cost model and regional socioeconomic losses model were especially considered because of the traffic network. Illustrative design examples of an actual steel box girder and an orthotropic steel deck bridge were discussed to demonstrate the LCC effectiveness of the design of steel bridges. Based on the results of the numerical investigation, the LCC-effective optimum design of steel bridges based on the proposed LCC model was found to lead to a more rational, economical, and safer design compared with the initial cost-optimum design and the conventional code-based design.

Keywords

Life-Cycle Cost; Indirect Cost Model; Steel Bridge; Optimization; Reliability;

Citations & Related Records

Reference

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KSCI

Optimum Life-Cycle Cost Design of Steel Bridges 강교의 생애주기비용 최적설계

Optimum Life-Cycle Cost Design of Steel Bridges