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原文传递 Subassemblage Cyclic Loading Tests of Buckling-Restrained Braced RC Frames with Unconstrained Gusset Connections

题名：	Subassemblage Cyclic Loading Tests of Buckling-Restrained Braced RC Frames with Unconstrained Gusset Connections
正文语种：	英文
作者：	Zhe Qu; Shoichi Kishiki; Yusuke Maida;Hiroyasu Sakata, Aff.M.ASCE
作者单位：	Key Laboratory of Earthquake Engineering and Engineering Vibration;Tokyo Institute of Technology;Graduate School of Engineering, Dept, of Architecture, Chiba Univ;Tokyo Institute of Technology
关键词：	Buckling restrained brace (BRB); Reinforced concrete (RC) frame; Unconstrained gusset connection; Damage control; Posttensioned rod; Headed stud group; Concrete and masonry structures.
摘要：	An unconstrained gusset connecti on for buckling restrained braces in reinforced con Crete frame structures is proposed and tested as an effort to mitigate the complicated and usually harmful interactions between the steel gusset plate and the adjoining reinforced concrete column. Local damage control incorporating the rearrangement of beam flexural strength is also proposed to enhance the reliability of the gusset connection by moving the potential plastic hinge of the beam away from the connection region. Two different connecting methods, one with posttensioned steel rods and the other embedded stud groups, were considered. The results of the cyclic loading tests on reinforced concrete (RC) beam-gusset connection subassemblies confirmed that both connecting methods are available as long as the local damage control is implemented, which is not only helpful in eliminating the un favorable deformation loss at the conn ection, but more importantly, can prevent the buckling restrained braces (BRBs) from being dislocated as a result of the beam end failure in extreme earthquake events. DOI: 10.106l/(ASCE)ST.1943-541X.0001407.
出版日期：	2016.02
出版年：	2016
期刊名称：	Journal of Structural Engineering
卷：	Vol.142
期：	NO.02
页码：	04015128