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http://dx.doi.org/10.5762/KAIS.2021.22.2.802

A Study on Life Cycle Cost According to Bridge Condition  

Park, Jun-Yong (Department of Urban Infrastructure Research, Seoul Institute of Technology)
Lee, Keesei (Department of Urban Infrastructure Research, Seoul Institute of Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.2, 2021 , pp. 802-809 More about this Journal
Abstract
To cope with the increasing maintenance costs due to aging, the maintenance cost was evaluated from the perspective of asset management. The maintenance cost can be predicted based on the condition of the bridge, and the life cycle cost is used as an index. In general, the condition of a bridge has a wide distribution characteristic depending on the deterioration, load, and material characteristics. In this paper, to evaluate the effect of the bridge conditions on the life cycle cost, condition prediction models were constructed considering the service life, deterioration rate, and inspection error, which are the main variables of the bridge condition and life cycle cost calculation. In addition, condition prediction models were constructed based on the distribution of the health index to estimate the upper and lower bounds of the life cycle costs that can occur in individual bridges. Life cycle cost analysis showed that the life cycle cost differed significantly according to the condition of the bridge. Accordingly, research will be needed to increase the reliability of predicting the life cycle cost of individual bridges.
Keywords
Life Cycle Cost; Condition Prediction Model; Service Life; Deterioration; Bridge Inspection;
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