【摘要】 针对某复杂高层钢框架结构,运用ANSYS进行有限元数值建模,建模过程中对钢管混凝土复合材料进行简化处理,求得其组合弹性模量。在模态分析和地震载荷作用下时程分析的基础上,对该结构进行在罕遇地震作用下的弹塑性分析,求得结构的基底剪力-顶部位移曲线,进而对结构进行推覆分析,得到结构各构件和层间的位移及内力,找到结构的薄弱层为第5层,为结构设计提供可靠的参考数据。更多还原

【Abstract】 In this paper finite element numerical simulation of a complex high-rise building is completed,simplified treatment in modeling process is introduced for composite concrete filled steel tube material,thereby its combined elastic modulus is worked out.Based on modal analysis and time-history analysis under earthquake action,elastic-plastic analysis of this building under rare earthquake action is conducted,and the curve of base shear to the roof displacement is obtained.Further it calculates the internal force in members and inter-story displacement by pushover analysis.It is indicated that the location of weak story is the fifth story of this building.The results of this paper can be valuable data for structural design.更多还原