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项目为钢结构外壳与混凝土内框架组成的混合结构,结构整体形状呈梭形,钢结构部分类似鱼骨。采用YJK,MIDAS/Gen软件对结构进行整体计算和弹性时程分析,采用ANSYS软件对重要节点进行有限元分析。结果表明,混合结构阻尼比应取计算与规范的较小值;整体分析应考虑楼梯的作用,楼梯对周期、阻尼比、位移及与楼梯直接相连的柱内力均有影响;通过概念设计对关键节点进行加强能够满足设计要求。
The project is a hybrid structure composed of a steel shell and a concrete inner frame. The overall shape of the structure is a fusiform shape, and the steel structure is similar to a fishbone. Using YJK, MIDAS / Gen software to calculate the structure of the whole and elastic time history analysis, using ANSYS software for finite element analysis of important nodes. The results show that the damping ratio of hybrid structure should take the smaller value of calculation and specification. The overall analysis should consider the function of stairs. The influence of stairs on the cycle, damping ratio, displacement and column internal forces directly connected to stairs are affected. By conceptual design, Nodes can be strengthened to meet design requirements.