The Composite structures such as CFT(Concrete Filled Steel Tube) have many advantages compared to the H shape columns, concrete columns. But, CFT columns were reinforced difficult which was members with closed section. When beams size were different around the columns in buildings of various form, the construction was complex that diaphragm was overlapped or inclined. In this study, structural performance comparison of horizontal diaphragm and vertical plates was conducted.

ABSTRACT
 1. 서 론
 2. 구조성능실험
  2.1 실험계획 및 방법
  2.2 실험결과
 3. 결 론
 참고 문헌

• 오헌근(삼성물산(주) 건설부문) | Oh Heon-Keun
• 류재용(서울시립대학교 건축공학과) | Ryoo Jae-Yong
• 최성모(서울시립대학교 건축학부) | Choi Sung-Mo