AU(A plus U-shaped) composite beam was developed for reducing the story height in the residential buildings, and saving the cosrtuction cost of floor structures. Structural performance and economic feasibility of the composite beam have been sufficiently approved through the structural experiments and the analytical studies. Fire safety for the practical application of the composite beam has also been verified through the fire resistance tests and the heat transfer analyses. In this study 2-points bending tests were performed on the four specimens already tested for fire resistance to evaluate the residual bending strength of AU composite beam after fire accident. The same bending test was performed on the one fresh specimen having the same section and span of the specimens for practically comparative study.

Abstract
1. 서론
2. 실험 계획
3. 내화 구조 인정 시험
4. 가력 실험
    4.1 가력 실험 계획
    4.2 최대 하중 및 파괴 모드
    4.3 하중-변위 관계
    4.4 항복 하중
5. 결론
References

• 김영호(엔테이지) | Kim Young Ho (NTAGE) 교신저자