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近来,发现由支撑端部转动引起的端弯矩对防屈曲支撑(BRBs)的整体稳定性有不利影响。然而,从实用的角度来看,传统的铰接连接的防屈曲支撑的弯矩方程过于复杂。同时,由于没有对防屈曲支撑的抗弯性能和支撑端部细节构造的关系进行深入研究,可能造成设计时对防屈曲支撑整体稳定承载力的错误评估。提出弯矩放大系数(MAF)法来简化传统的铰链连接的防屈曲支撑的弯矩函数,并对几个影响弯矩放大系数的重要参数进行研究,介绍所提出的简化函数。提出一个关于整体稳定性的统一设计方法并用于铰接连接的防屈曲支撑中。最后对防屈曲支撑整体稳定性的未来研究方向进行介绍。
Recently, it has been found that the bending moment caused by the rotation of the support ends adversely affects the overall stability of the buckling brace (BRBs). However, from a practical point of view, the bending moment equations of the traditional hingedly connected buckling support are too complicated. In the meantime, the in-depth study on the relationship between the flexural strength of the buckling brace and the details of the supporting end details may lead to the wrong assessment of the overall stabilizing bearing capacity of the buckling brace at design time. The moment of magnification (MAF) method is proposed to simplify the moment function of the buckling brace with the traditional hinge connection. Several important parameters that influence the moment amplification factor are also studied. The proposed simplified function is introduced. A uniform design approach to the overall stability is proposed and used in hingedly connected buckling restraints. Finally, the future research direction of overall stability of buckling brace is introduced.