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Title |
A Study on the Asset Valuation of Pedestrian Overpasses Considering Reliability
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Authors |
이용준(Yong-Jun Lee) ; 박경훈(Kyung-Hoon Park) ; 선종완(Jong-Wan Sun) |
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DOI |
https://doi.org/10.11112/jksmi.2025.29.5.12 |
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Keywords |
보도육교; 자산가치평가; 와이블 분포; 신뢰도; 상태등급 Pedestrian overpasses; Asset valuation; Weibull distribution; Reliability; Condition grade |
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Abstract |
This study proposes an asset value evaluation method that takes into account the performance of pedestrian overpasses in South Korea.
Conventional methods for asset valuation have limitations in that they depreciate assets by a fixed amount over the standard service life without considering the actual condition of the facilities, often resulting in undervaluation. To address this issue, this study derives performance indicators for pedestrian overpasses using the Weibull distribution and introduces two evaluation methods: the Estimated Service Life Depreciation (ESLD) method and the Performance-Based Depreciation (PBD) method. The ESLD method evaluates asset value based on the estimated average service life, while the PBD method uses a combination index derived from both reliability, based on service years, and condition grades. To estimate the performance indicators of domestic pedestrian overpasses, various datasets such as basic facility information, inspection records, and data on closure or demolition were processed into lifecycle data. The processed data were analyzed using the Weibull distribution to calculate indicators such as mean service life and reliability. These performance indicators were then applied to the proposed valuation models. The analysis results demonstrate that the proposed methods more accurately reflect the actual condition and remaining service life of in-service pedestrian overpasses, leading to more rational and realistic asset valuations compared to conventional methods. These methods are expected to provide meaningful indicators for facility managers, supporting more effective decision-making in maintenance and management.
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