文献类型：期刊文献

英文题名：Experimental investigation of the hysteretic performance of self-centering buckling-restrained braces with friction fuses

作者：Xie, Qin Zhou, Zhen Meng, Shao-Ping

第一作者：Xie, Qin;谢钦

通信作者：Zhou, Z[1]

机构：[1]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Southeast Univ, Key Lab Concrete & Prestressed Concrete Struct, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China

第一机构：贵州理工学院土木工程学院

通信机构：corresponding author), Southeast Univ, Key Lab Concrete & Prestressed Concrete Struct, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China.

年份：2020

卷号：203

外文期刊名：ENGINEERING STRUCTURES

收录：;EI(收录号：20194607676739);Scopus(收录号：2-s2.0-85074701317);WOS:【SCI-EXPANDED(收录号:WOS:000503312500021)】；

基金：The research described in this paper was sponsored by "National Key R&D Program of China" (2018YFC0705), "National Natural Science Foundation of China" (51878150), "Qing Lan Project" of Jiangsu Province, "Six Talent Peaks Project" of Jiangsu Province (JZ-003), High-level Talent Research Funding Project of Guizhou Institute of Technology (XJGC20190907). The supports are gratefully acknowledged.

语种：英文

外文关键词：Self-centering; Deformation capacity; Friction fuse; Braced frame; Seismic response

摘要：The dual-tube self-centering buckling-restrained brace (SC-BRB) is a new bracing system with self-centering and energy dissipation capacity. The current dual-tube SC-BRB is limited by the elastic elongation of the tendons. When the lateral deformation of existing dual-tube SC-BRBs exceeds 2.6% of a typical building story height, the tendons will be fractured, and this fracture will lead to a sudden drop of the bearing capacity of the brace and loss of the self-centering capacity. In this paper, an SC-BRB with a friction fuse (SC-BRB-FS) is proposed by introducing a friction device at the end of the brace to increase the deformation capacity of the dual-tube SC-BRB. At the same time, two bracing specimens are built for a quasi-static test. Activation of the friction fuse can efficiently increase the deformation capacity of the brace. When the displacement reaches 36 mm (corresponding to a story drift of 4%), the tendons are still not damaged. The nonlinear dynamic time-history analysis of the structure shows that compared with the fracture of tendons, the use of a friction fuse not only restrains the soft-story effect and reduces the collapse probability of the structure but also reduces the residual deformation of the structure.