위험도 및 가치 기반의 네트워크수준 교량 평가방법

Abstract

This study is proposed a methodology which can be applied in the decision-making of network-level considering all managed bridges by extending evaluation index taking into account the risk and value of individual bridges. A systematic model that converts the intermittent risk level of individual bridges to the continuous and quantitative risk index using utility theory is presented. The formulation model is also proposed to derive performance indices in network-level considering the risk index and relative importance of individual bridges. The applicability of the proposed method in network-level is considered based on the information of real bridges. It is expected that the proposed method is allow for more proactive decision-making, a stable allocation of budget and preparations against structural and environmental risks reflecting the direct and indirect risk and value of individual bridges.