节点柔度对半刚性连接钢框架动力性能影响研究

Study on the Influence of Semi-rigid Connections Stiffness on Dynamic Performance of Steel Frames

采用ANSYS进行数值模拟分析,建立了具有不同节点初始刚度的多层钢框架及相应刚性连接框架的计算模型,分析了节点刚度对结构自振频率的影响。进一步对结构进行了时程分析,研究了在地震波激励下结构顶点位移和柱底剪力随节点刚度的变化规律。

Finite element analysis software ANSYS is used to perform numerical analysis.Multistory frames with semi-rigid connections of different initial stiffness are constructed together with corresponding rigid frame.The influence of connection stiffness to natural frequencies of structures is analyzed.Further by adopting time–dependent method structures under excitation of seismic waves are analyzed.The influence of connection stiffness to the time cures of top point lateral displacement and column base shearing force of frames are studied.