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- 저자 : Leila Montazerian (검색결과 1 건)
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Local and global buckling condition of all-steel buckling restrained braces
Seyed Masoud Mirtaheri,Meissam Nazeryan,Mohammad Kazem Bahrani,Amin Nooralizadeh,Leila Montazerian,Mohamadhosein Naserifard 국제구조공학회 2017 Steel and Composite Structures, An International J Vol.23 No.2
Braces are one of the retrofitting systems of structure under earthquake loading. Buckling restrained braces (BRBs) are one of the very efficient braces for lateral loads. One of the key needs for a desirable and acceptable behavior of bucklingrestraining brace members under intensive loading is that it prevents total buckling until the bracing member tolerates enough plastic deformation and ductility. This paper presents the results of a set of analysis by finite element method on buckling restrained braces in which the filler materials within the restraining member have been removed. These braces contain core as the conventional BRBs, but they have a different buckling restrained system. The purpose of this analysis is conducting a parametric study on various empty spaces between core and restraining member, the effect of friction between core and restraining member and applying initial deformation to brace system to investigate the global buckling behavior of these braces. The results of analysis indicate that the flexural stiffness of restraining member, regardless of the amount of empty space, can influence the global buckling behavior of brace significantly.
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