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생애주기비용과 계층적분석과정 기반의 최적 교량대안 선정
장미숙,정근채 충북대학교 건설기술연구소 2004 建設技術論文集 Vol.23 No.1
The value of a structural system is dependent on the performance and the cost. To increase the value of a structural system, we should increase the performance and decrease the cost at the same time. When selecting an adequate alternative among various candidates, we should consider criteria both in performance and cost. In this paper, we propose an Analytic Hierarchy Process based methodology for selecting the optimal bridge alternative among various candidate bridges, which consider multiple evaluation criteria simultaneously. The proposed selection methodology can give the optimal alternative by using not only general qualitative criteria such as sociality, shape and constructibility, but also quantitative criteria such as life cycle cost, structural stability, usability, and environment. However, the proposed methodology is difficult to use manually since it requires much information and complex analysis models. To overcome the lack of practical usability, we also propose a framework for a decision support system which can help the decision maker by using information technology. We expect that the proposed selection method and the decision support system framework can be used as a useful tool for initial planning of structural systems, especially bridges.