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http://dx.doi.org/10.5762/KAIS.2018.19.12.717

Development of maintenance cost estimation method considering bridge performance changes  

Sun, Jong-Wan (Dept. of Infrastructure Safety Research, Korea Institute of Civil Eng. and Building Tech.)
Lee, Huseok (Dept. of Infrastructure Safety Research, Korea Institute of Civil Eng. and Building Tech.)
Park, Kyung-Hoon (Dept. of Infrastructure Safety Research, Korea Institute of Civil Eng. and Building Tech.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.12, 2018 , pp. 717-724 More about this Journal
Abstract
To prepare for the explosive increase in maintenance costs of bridges according to the aging of infrastructure, future maintenance costs of bridges should be predicted. For this purpose, the management status of bridges was investigated and modeled as the upper limit of the performance level and the target management level according to the life cycle. This paper proposes methodologies and procedures for estimating the bridge maintenance costs using two models and existing cost and performance prediction models that consist of unit repair cost model according to the safety score, performance degradation model of bridges, unit reconstruction cost, and average reconstruction time. To verify the applicability, future maintenance costs can be forecasted for specific management agency considering the number of bridges, degree of aging, and current management status. As a result, it is possible to obtain the maintenance cost and safety level of an individual bridge level for each year. In addition, by summing them up to the agency level, the average safety score, ratio of the safety level, inspection costs, repair costs, and reconstruction costs can be obtained. In a further study, the changes in maintenance costs can be analyzed according to the changes in the target management levels using the developed method. The optimal management level can be suggested by reviewing the results.
Keywords
Life-cycle Maintenance Cost; Performance Degradation Model; Target Management Level; Maintenance Cost Estimation Process; Maintenance Cost Estimation Method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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