건축물 화재는 인적, 경제적 피해를 일으키며, 건축물의 붕괴를 유발하여 2차 피해를 야기할 수 있으므로 최근 국내에서구조부재의 내화성능에 대한 관심이 크게 증가하고 있다. 우리나라의 내화구조는 사양설계를 기초로 적용되고 있으나, 최근국토교통부 연구과제를 통해 성능설계를 적용할 수 있는 연구결과가 발표되고 있다. 이에 본 연구에서는 내화피복재를 도포한합성보 실험체를 제작하여 3시간 내화시험을 진행하였다. 또한, 동일한 형상과 조건으로 유한요소해석을 수행하여 내화해석의신뢰성을 검증하였으며, 다양한 두께의 내화피복재를 적용하여 내화해석을 진행하였다.
Building fires can lead to loss of human lives and economic damage, as well as secondary damage due to collapsing buildings. Consequently, fire resistance performance of structural members has been garnering considerable interest in Korea. Fireproof structures are applied on the basis of the specification design. However, recent research results that focus on application of performance design have been published through a research project by the Ministry of Land, Infrastructure, and Transport. Therefore, in this study, composite beam specimens coated with fire-resistant material were manufactured, and fire resistance tests were conducted for 3 h. Additionally, finite element analysis was performed under the same shape and conditions to verify the reliability of the fire resistance analysis, which was conducted by varying the thickness of the fire-resistant coating.