【摘要】 理论研究与震害经验表明,地震时对于平面不规则结构会产生平动与扭转耦合的空间振动。用ANSYS有限元分析软件,对结构动力特性和地震反应进行分析,得到了结构的自振特性以及结构在地震作用下的顶层位移和加速度时程曲线。计算结果分析表明,利用ANSYS建立三维有限元模型进行地震反应分析是有效合理的。更多还原

【Abstract】 The results of theoretical research and earthquake damage investigation show that there is a spatial vibration coupling translation with torsion for structures when earthquake occurs.The dynamic properties and seismic responses of the structures are analyzed by using the finite element analysis software ANSYS.The free-vibration characteristics and the horizontal displacement and acceleration time-history curves of the roof are obtained.Besides,the analyses for calculation results show that it is effective and reasonable to make analysis for seismic reaction by using the three-demensional finite element model with ANSYS.更多还原