ANALYSIS OF LIFE CYCLE COST ON LONG-TERM MANAGEMENT FOR MULTIPLE BRIDGES CONSIDERING TRAFFIC FLOW

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  • TANIDA Hidetoshi
    徳島大学　大学院先端技術科学教育部　知的力学システム工学専攻　博士前期課程
  • OKUSHIMA Masashi
    徳島大学　大学院社会産業理工学研究部

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Other Title
  • 交通流動を考慮した複数主要橋梁における長期補修でのライフサイクルコストに関する分析

Abstract

<p>In the long-term management for bridges, it is necessary to consider not only repair costs but also changes in traffic flow caused by repair work under the plan period in which social conditions can be assumed. In this paper, it aims to establish a methodology of a long-term management for multiple bridges considering traffic flow. For the purpose, we evaluate the management scenarios for multiple bridges with life cycle cost, which is estimated with the bridges management simulation combined method of bridge deterioration model and traffic assignment model. In the management methodology consider in particular the method of estimating the residual value corresponding to bridge degradation. As a result, we demonstrated cost reduction effect by preventive repair irrespective of the planned service life of the bridge. Furthermore, by considering the residual value in the LCC which adds the repair cost and the road user cost, we demonstrated that it is possible to draft an appropriate long-term management plan regardless of the length of the planning period.</p>

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