2008•Journal of Disaster Prevention and Mitigation EngineeringRequires access

Comparative Analysis of Three Types of Steel Braced Frames

Jun Dong

Abstract

Based on Pushover method,three types of braced frames called K-shape eccentric braced frame(KEBF),Y-shape eccentric braced frame(YEBF) and Y-shape knee braced frame(YKBF) are analyzed to find the influence regularities of the length and size of link beams on their earthquake-resistant performance(ERP),then the three types of braced frames are compared in stiffness,ductility and energy dissipation.According to the analytical result,it can be found that under the reasonable design,YKBF can win the best stiffness and ductility,but KEBF can dissipate the most energy;the stiffness and energy dissipation of YEBF is the worst and its ductility is between the others.

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Key concepts: Braced frame, Dissipation, Structural engineering, Ductility (Earth science), Stiffness, Frame (networking), Brace, Eccentric