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Title |
Enhanced Condition Assessment of Reinforced Concrete Structures for Improved Safety Inspection and Maintenance
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Authors |
최승국(Seung-Guk Choe) ; 정현우(Hyun-Woo Jung) ; 김창혁(Changhyuk Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2026.38.3.285 |
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Keywords |
정밀안전진단; 상태평가 프로그램; SafetyMan; 콘크리트 강도 추정 precision safety diagnosis; condition assessment program; SafetyMan; concrete strength estimation |
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Abstract |
This study addresses the limitations of the structural safety evaluation program (SafetyMan) currently used for detailed safety inspections of buildings. To achieve this, three main improvements are proposed: (1) simplifying the user input process, (2) introducing a new concrete strength estimation formula based on domestic structural data, and (3) quantifying qualitative evaluation criteria. Regression analyses using data provided by the Korea Authority of Land & Infrastructure Safety (KALIS) revealed that an exponential regression model performed best, achieving a mean error rate of 12.56 % and reducing estimation errors by up to 75.6 % compared with existing Japanese formulas. Furthermore, qualitative judgment factors, such as “minor damage,” appearing in the assessment of strength ratio, concrete strength, displacement, and deflection were redefined into numerical ranges, thereby enhancing consistency and objectivity. Application of the improved program to case studies demonstrated that, while overall safety grades remained unchanged, sub-indicators reflected more rational and consistent evaluation outcomes. These improvements are expected to enhance the reliability of safety diagnostics for aging buildings and to support systematic maintenance practices.
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