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为研究由不同材料构成的大型异性体组合结构的抗震性能,采用通用有限元分析及设计软件MIDAS/Gen对底部为规则混凝土框架结构、上部为圆柱形闭合钢架结构的组合结构建立了分析模型,采用组阻尼考虑不同材料阻尼比的影响,对整体结构进行抗震反应谱分析,计算水平地震作用下结构的位移与受力情况.研究结果表明:不同的结构类型会使组合结构产生较大变形,应采取有效措施;不同材料组成的组合结构,应考虑组阻尼对结构的影响.
In order to study the seismic performance of the large-scale allogeneic composite structures composed of different materials, an analysis model was established by using the common finite element analysis and design software MIDAS / Gen on the combined structure of a regular concrete frame structure at the bottom and a cylindrical closed steel structure at the upper part. , The group damping is taken into account and the seismic response spectrum analysis of the whole structure is taken into account to calculate the displacement and stress of the structure under the action of horizontal earthquake.The results show that different structure types will cause large deformation of the composite structure , Effective measures should be taken. For the composite structure composed of different materials, the influence of the group damping on the structure should be considered.