Abstract：Buckling restrained braces （BRBs） with different ultimate deformation capacities were designed for six RC frame structures. The numerical models of the structural buildings were established and verified in OpenSees. Incremental dynamic analyses and seismic vulnerability analyses were carried out for all six building models. The influence of different ultimate deformation capacity of BRBs on seismic collapse performance of the RC frame structure was evaluated. The results reveal that seismic collapse response of the structures improves with increasing BRB ultimate displacement. The failure probability of BRBs is higher than 5% under rare earthquake when the ultimate deformation coefficient is less than 1.2. While the increasing rate of seismic collapse performance decrease with a further increase of BRB ultimate deformation when the coefficient is greater than 1.2. The results imply the reasonability for taking ultimate deformation coefficient value of 1.2 as the safety factor of energy dissipation device in Technical specification for seismic energy dissipation of buildings （JGJ 297—2013).
孔思华 石菲 周云. 不同极限位移BRB的RC框架结构#br#
抗地震倒塌性能研究[J]. 土木工程学报, 2020, 53(S2): 61-67.
Kong Sihua Shi Fei Zhou Yun. Study on seismic collapse performance of RC frame structure with #br#
different ultimate displacements BRB. 土木工程学报, 2020, 53(S2): 61-67.
