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高层摇摆墙的刚度和强度需求较大,且预制和吊装施工困难。为减小高层框架结构的位移响应和损伤集中效应,提出了连续摇摆墙-屈曲约束支撑框架(CRW-BRBF)结构体系,即连续摇摆墙控制层间位移分布模式,屈曲约束支撑承担地震作用并充当耗能减震装置,框架承担竖向荷载作用并作为抗震第二道防线。采用Open Sees软件对结构进行了22条地震波的动力时程分析,对比了屈曲约束支撑框架(BRBF)、摇摆墙-屈曲约束支撑框架(RW-BRBF)和CRW-BRBF的抗震性能。分析结果表明:连续摇摆墙可以减少BRBF结构的层间位移角不均匀系数;与RW-BRBF相比,CRW-BRBF中摇摆墙的弯矩和剪力需求均较小。
High-rise swing wall stiffness and strength of the larger, and precast and lifting construction difficulties. In order to reduce the displacement response and damage concentration effect of high-rise frame structure, a continuous wobbler-buckling constrained support frame (CRW-BRBF) structural system is proposed, ie, the continuous wobbler wall controls the interlayer displacement distribution mode and the buckling restraint support undertakes the earthquake action Act as energy-saving damping device, the framework to bear the role of vertical load and as a second line of defense against earthquakes. The dynamic time-history analysis of 22 seismic waves was carried out by using Open Sees software. The seismic performance of BRBF, RW-BRBF and CRW-BRBF was compared. The results show that the continuous wobbler can reduce the nonuniformity of the displacement angle of the BRBF structure. Compared with the RW-BRBF, the bending moment and the shear force of the wobbler wall in the CRW-BRBF are small.