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根据屈曲约束支撑与钢框架的合理刚度比设计多层屈曲约束支撑钢框架。为了比较不同屈曲约束支撑布置方式对抗震性能的影响,设计4中不同布置方式的结构模型。利用有限元软件SAP2000进行建模分析,分别采用底部剪力法、振型分解反应谱法、线性动力时程分析、非线性动力时程分析、静力弹塑性分析比较不同布置方式对结构抗震性能影响。探讨屈曲约束支撑不同布置方式的优劣,为屈曲约束支撑框架设计提供依据。
According to the reasonable stiffness ratio between buckling restraint brace and steel frame, multi-layer buckling restraint brace steel frame is designed. In order to compare the impact of different buckling restraint brace on the seismic performance, the structural model with different layouts is designed. The finite element software SAP2000 was used for modeling analysis. The influences of different layouts on the seismic performance of the structure were compared using bottom shear method, mode decomposition reaction spectrum method, linear dynamic time history analysis, nonlinear dynamic time history analysis and static elastoplastic analysis influences. The advantages and disadvantages of different arrangements of buckling restraint brace were discussed, which provided the basis for the buckling restraint brace design.