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论文类型：期刊论文

发表时间：2014-04-01

发表刊物：JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH

收录刊物：SCIE、EI、Scopus

卷号：95

页面范围：106-115

ISSN号：0143-974X

关键字：Buckling-restrained brace; Global stability; End bending moment; Moment amplification factor; Unified design method

摘要：The end bending moment induced by brace end rotation was recently found to have a negative effect on the global stability of buckling-restrained braces (BRBs). The proposed bending moment functions for the BRBs with traditional pinned connections, however, were found to be too complicated from practical view. Also, the relationship between the flexural behavior of BRBs and the brace end details has not yet been well understood, possibly resulting in misevaluation of BRB global stability capacity in design. In this paper, a moment amplification factor (MAF) method is proposed to simplify the bending moment function of the BRBs with traditional pinned connections, followed by parametric study on the key parameters affecting the MAF and presentation of the proposed simplified function. A unified global stability design method is proposed and implemented to the BRBs with pin-ended connections. Several future research needs for BRB global stability are presented finally. (C) 2013 Elsevier Ltd. All rights reserved.