OUT-OF-PLANE BUCKLING LOAD OF BUCKLING-RESTRAINED BRACES INCLUDING BRACE JOINTS

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Abstract
This paper presents out ・ ofLplane buckling load ofbuckling-restrained braces including itS joints ． There are two parameters which affect outo 仁 plane buckling load；(1)flexural stiffness of gussetpiate between the end of ribs at ． gussetplate a 亘 d surface of girder ・ flange ， (2) position of beams for preventing lateral buckling of girdar ． Analytical model for resbarching outofplane buckling load is consisted ， of rotational springs which represent the fbrmer parameter， horizontal spring which represents the latter parameter ， and thre6 different flexura1 elements which represent bucklingrestrained part and both joints ． As a result ， the warning o ｛ out-of-plane buckling to brace joints without either ribs reaching girder or

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