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Experimental Study on the Vibration Control Capacity of Hybrid Buckling-Restrained Braces  

Kim, Do Hyun ((주)동양구조안전기술 구조공학시스템연구소)
Ju, Young Kyu (고려대학교 건축사회환경공학과)
Kim, Myung Han (대진대학교 건축공학과)
Sung, Woo Gi (CS구조엔지니어링)
Kim, Sang Dae (고려대학교 건축사회환경공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.21, no.1, 2009 , pp. 83-91 More about this Journal
Abstract
Buckling Restrained Braces (BRBs) show good seismic behavior. They do not dissipate energy, however, when they are subjected to minor earthquakes or wind. Hybrid Buckling Restrained Braces (H-BRBs), which can improve the wind performance of the BRB system, are a kind of hybrid damper system composed of a viscoelastic damper and BRBs. In this paper, two H-BRB specimens with different cores were experimentally investigated to ensure the structural behavior of the H-BRB system in an elastic range. The axial deformation of the primary resisting system was compared with that of the secondary resisting system, and the equivalent damping ratio of the H-BRBs was estimated. It was concluded that H-BRBs with double shear dampers show good structural behavior and are applicable to tall buildings, to improve the building performance at a comfortable level.
Keywords
buckling-restrained brace(BRB); energy dissipation; viscoelatic damper; hysteretic damper;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Chopra A.K.(2001), Dynamics of Structures, Prentice Hall
2 AISC(2005), Seismic provision for steel buildings, Chicago
3 FEMA 450(2004). 2003 NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures Part1: Provisions, the Building Seismic Safety Council
4 박만우, 주영규, 김명한, 김도현, 김상대(2007), 콘크리트 비충전형 비좌굴 가새의 구조적 거동평가, 한국강구조학회 2007년도 학술발표대회 논문집, pp. 207~212
5 정길영, 하동호, 박건록, 권형호(2002), 저경도 고무받침의 특성에 관한 실험적 연구, Vol. 6, No. 4, pp. 39~49   DOI
6 ASCE(2005), Minimum Load on Minimum Design Loads for Buildings and Other Structures, (ASCE/SEI 7-05), American Society of Civil Engineers
7 이강민(2003), 기존실험자료를 통한 압축 철골가새의 반복 이력거동에 관한 고찰, 한국강구조학회 논문집, Vol. 15, No. 4, pp. 359~368
8 National Research Council of Canada (1995), National Building Code of Canada: 1995 Part 4 Structural Design 4, National Research Council of Canada
9 Aiken, I.D., Mahin S.A. and Uriz,P.(2002), Large-Scale Testing of Buckling-Restrained Braced Frames, Japan Passive Control Symposium, Tokyo Institute of Technology, Japan