한국구조물진단유지관리공학회 학술발표대회 논문집 2018 한국구조물진단유지관리공학회 봄 학술발표 및 포럼 논문집 (p.635-636)

|특별세션_한양대학교|
염해에 노출된 콘크리트 구조물의 확률론적 보수비용 및 보수시기 평가

Evaluation of Probabilistic Repairing Number and Cost for Concrete Structures Exposed to Chloride Attack

목차

Abstract
1. 서 론
2. 해석계획 및 방법
3. 해석결과 및 고찰
4. 결 론
참고문헌

초록

Chloride attack is one of the most critical deterioration due to rapid corrosion initiation and propagation which can cause structural safety problem. Extended service life through repairing is very important for determination of maintenance strategy. Conventionally adopted models for estimation of LCC (Life Cycle Cost) have shown step-shaped elevation of cost, however the extension of service life is much affected by quality of construction and repairing materials, which means engineering uncertainties in residual service life. In the paper, RC (Reinforced Concrete) column with three different mix proportions exposed to chloride attack are considered, and repairing numbers with related costs are evaluated through probabilistic technique for maintenance. When calculating repair frequency for intended service life through probabilistic model, the required repair frequency is evaluated to be 6.71 times for OPC, 4.09 times for SG30, and 2.95 times for SG 50, respectively. The probabilistic model for repairing cost is evaluated to be effective for reducing the repair frequency reasonably with changing the intended service life and design parameters.