Earticle

초록

영어

The use of steel braced frames as a retrofit method has been broadly used due to its effectiveness in terms of both light weight and short construction periods. However, the steel braced frame retrofit method is difficult to apply to the inner frames of buildings. Consequently, there have been demands for a braced frame retrofit method that can be broadly and easily applied to both inner and outer frames of buildings. In this study, a retrofit method of steel braced frames having Ductile Fiber Reinforced Cementitious Composites (DFRCCs) and steel bars at the mid-span of the steel brace member is proposed. Pre-fabricated upper and lower segments of the brace member are connected on-site with DPFRCCs, meaning that the proposed method is applicable to the inner frames of buildings as a seismic retrofit method with advantages of simple and rapid installation. The tension force is transmitted only through the steel bars and the compression force is transmitted by the prestressed bars to the DFRCCs of the joint which connect the three brace units. Results from cyclic tests of three specimens clearly showed that specimen with steel braces and suggested specimen using DFRCCs and steel bars ensure better strength and stable performance than pure RC frame. Improved construction efficiency can also be achieved with the proposed retrofit method.

목차

Abstract
 1. 서 론
 2. 실 험
  2.1 실험체 계획
  2.2 실험체 제작
  2.3 DFRCCs의 재료 및 배합
  2.4 소재시험 결과
  2.5 실험방법
  2.6 측정방법
 3. 실험결과
  3.1 균열 및 파괴양상
  3.2 하중과 변위의 관계
  3.3 강성저하 특성
  3.4 항복내력과 최대내력
  3.5 에너지 흡수능력
  3.6 강재 및 콘크리트의 변형도 분포
  3.7 철골가새의 변형도
 4. 결 론
 참고문헌

저자

• 김순철 [ Kim, Soon-Chul | 동신대학교 문화건축학부 교수, 공학박사 ]
• 문연준 [ Moon, Youn-Joon | 동신대학교 산업디자인학과, 전임강사 ]
• 최효승 [ Choi, Hyo-Seung | 동신대학교 산업디자인학과, 전임강사 ]
• 양일승 [ Yang, Il-Seung | 동신대학교 문화건축학부 전임강사, 공학박사 ] 교신저자
• 황성철 [ Hwang, Sung-Chul | 광성(주) 기술연구소 소장, 공학박사 ]

참고문헌