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基于薄钢板剪力墙的等效拉杆理论,利用SAP2000有限元分析软件,通过10层3跨结构倒三角型和均匀分布两种基本加载模式的底部剪力V-顶点位移Δ曲线和多条地震波增量动力分析法得到的平均V-Δ曲线的差值建立了函数关系,获取了相关的计算系数,进而推算出了7跨相同层数的结构在地震作用下的抗震性能。对所设计的抗弯钢框架-薄钢板剪力墙结构体系的抗震性能进行了评估,通过Matlab语言编写的能力谱法程序计算出了结构在小震和中震下前三阶振型的需求谱、能力谱和性能点。利用改进的能力谱法计算出了10层7跨抗弯钢框架-薄钢板剪力墙结构中震下的地震力折减系数R、超强系数R_Ω和延性折减系数R_μ分别为2.81、2.58和1.09;大震下的位移放大系数Cd为4.12。
Based on the equivalent drawbar theory of thin steel plate shear walls, the bottom shear V-apex displacement Δcurve and the multiple seismic waves were analyzed by SAP2000 finite element analysis software through the inverted and regular distribution of 10 layers of 3-span structures. The function of the average V-Δ curve obtained by incremental dynamic analysis is established. The relevant calculation coefficients are obtained, and the seismic performance of structures with the same number of layers across seven floors under earthquake action is deduced. The seismic performance of the designed RC frame-steel plate shear wall structure system was evaluated, and the demand of the first three modes of the structure under small and medium earthquakes was calculated by the power spectrum method program written in Matlab Spectral, profiling and performance points. The seismic force reduction coefficient R, the super-strength coefficient R_Ω and the ductility reduction coefficient R_μ of 10 layers of 7-span flexural-inframe steel frame-sheet steel shear wall are calculated by the improved ability spectrum method, which are 2.81 and 2.58 And 1.09 respectively; the displacement magnification coefficient Cd under large earthquake is 4.12.