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应用软件SAP2000针对不规则钢结构分别建立加支撑和未加支撑2种结构模型,对2个结构进行弹性模态分析、结构的反应谱分析以及结构的线性时程分析,通过上述分析得出结构的质量参与系数、前12阶自振周期、基本动力特性,经过数据比较两个模型的层间位移,分析计算得出层间位移角,根据所得数据判断并评估结构的抗震性能。表明加结构支撑的结构布置能提供一定的抗扭刚度,使结构保持良好的变形,从而有效提高结构抗震减震性能。
The software SAP2000 builds two kinds of structural models with and without support for the irregular steel structure respectively. The elastic modal analysis, the structure response spectrum analysis and the structure linear time history analysis of the two structures are obtained. Through the above analysis, the structure The mass participation coefficient, the first 12 natural periods and the basic dynamic characteristics are obtained. The interlayer displacement of the two models is compared through data comparison, and the displacement angle between layers is calculated and calculated. The seismic performance of the structure is judged and evaluated based on the obtained data. It shows that the structural arrangement of the structural support can provide a certain degree of torsional stiffness and maintain a good deformation of the structure, so as to effectively improve the seismic and damping properties of the structure.