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Experimental Investigation of a Combined System in Steel Braced Frames

فصلنامه زلزله شناسی و مهندسی زلزله، دوره: 17، شماره: 3
Year: 1394
COI: JR_JSEE-17-3_005
Language: EnglishView: 46
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In general, the analysis and design of buildings must satisfy two criteria. First, under frequently occurring low to moderate earthquakes, the structure should have sufficient strength and stiffness to control deflection and to prevent any structural damage. Second, under rare, severe earthquakes, the structure must have sufficient ductility to prevent collapse. In this case, significant damage to the structure and nonstructural elements is acceptable. In this paper, the performance of an innovative, eccentric and knee bracing system called Eccentrically Knee Brace (EKB) is discussed and the behavior is investigated. A combination of eccentrically braced steel frames and knee braced steel frames has been assessed, and the concepts of the design of defined schemes are reviewed. As the structural fuse of the frame, the knee element will yield first during a moderate earthquake. In large earthquakes, both of them contribute in dissipating energy. Two half-scale EKBs were tested using the SAC loading protocol and an innovative loading protocol. The performance evaluation procedure includes laboratory and computer simulations. Cyclic loading tests were conducted to study the behavior of EKB.


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Hosseini Hashemi, Behrokh and Alirezaei, Mehdi,1394,Experimental Investigation of a Combined System in Steel Braced Frames,

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  • American Institute of Steel Construction, AISC (۲۰۱۰) Seismic Provisions for ...
  • Roeder, C.W. and Popov, E.P. (۱۹۷۸) Eccentrically braced steel frames ...
  • Hjelmstad, K.D. and Popov, E.P. (۱۹۸۳) Cyclic behavior and design ...
  • Kasai, K. and Popov, E.P. (۱۹۸۶) General behavior of WF ...
  • Hjelmstad, K.D. and Popov, E.P. (۱۹۸۳) Seismic Behavior of Active ...
  • Popov, E.P. and Engelhardt, M.D. (۱۹۸۸) Seismic eccentrically braced frames. ...
  • Balendra, T., Sam, M.T., Liaw, C.Y., and Lee, S.L. (۱۹۹۱) ...
  • FEMA ۳۵۶ (۲۰۰۰) Prestandard and Commentary for the Seismic Rehabilitation ...
  • ASTM (۲۰۰۳) Standard Test Methods and definitions for Mechanical Testing ...
  • SAC Joint Venture (۱۹۹۷) SAC. Protocol for Fabrication, Inspection, Testing ...

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