earticle

영어

This study analyzes aging degradation in apartment fire doors and proposes maintenance improvements. 146 fire resistance test cases from defect lawsuits (2022–2024) were quantitatively analyzed. Although the data involves selection bias from high-risk samples, it offers empirical insights into fire door performance. The results showed a 54.1% overall failure rate, soaring to 94.1% in apartments over 10 years old, indicating a severe loss of safety functionality. This degradation stems from physical aging and historical practices, particularly the use of honeycomb cores (80.6% failure) and pivot hinges (37.8% failure). Since 2013, a shift toward mineral wool cores and butt hinges has significantly improved stability. Simulations proved that timely replacement of gaskets and hardware could reduce failure rates to the 40% range. The study suggests a differential management strategy: prioritizing the replacement of older doors with honeycomb cores and pivot hinges while strengthening preventive maintenance for modern systems.