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Title |
Probabilistic Analysis of Repairing Cost Considering Random Variables of Durability Design Parameters for Chloride Attack
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Authors |
이한승(Han-Seung Lee) ; 권성준(Seung-Jun Kwon) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.1.032 |
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Keywords |
확률 보수용 모델 ; 보수 빈도 ; 내구수명 ; 염해 ; 변동계수 Probabilistic model for repairing cost ; Repair frequency ; Service life ; Chloride attack ; COV |
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Abstract |
Repairing timing and the extended service life with repairing are very important for cost estimation during operation. Conventionally used model for repair cost shows a step-shaped cost elevation without consideration of variability of extended service life due to repairing. In the work, RC(Reinforced Concrete) Column is considered for probabilistic evaluation of repairing number and cost. Two mix proportions are prepared and chloride behavior is evaluated with quantitative exterior conditions. The repairing frequency and cost are investigated with varying service life and the extended service life with repairing which were derived from the chloride behavior analysis. The effect of COV(Coefficient of Variation) on repairing frequency is small but the 1st repairing timing is shown to be major parameter. The probabilistic model for repairing cost is capable of reducing the number of repairing with changing the intended service life unlike deterministic model of repairing cost since it can provide continuous repair cost with time.
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