A translational medical center is located in the high intensity fortification area and the earthquake key monitoring and defense area.After comparing and selecting different damping schemes from the aspects of damping effect and economy,the combined damping scheme of BRB+VFD was selected,and the principle of damper layout was put forward.The finite element method was used to analyze the elastic and elastic-plastic time history.The results show that the BRB+VFD combined damping scheme can provide certain additional stiffness and additional damping ratio for the main structure,reduce the base shear force under earthquake,delay the damage of the main structure,and meet the design requirements of the second defense line of the main structure.VFD plays a role in energy dissipation under the action of small earthquakes,moderate earthquakes and large earthquakes.BRB only provides stiffness under small earthquakes,and enters yield energy dissipation under medium and large earthquakes,which improves the seismic performance of the structure.With the increase of seismic intensity,the additional damping ratio of the structure increases,which effectively guarantees the seismic performance of the structure.
关键词
组合减震/黏滞阻尼器/屈曲约束支撑/钢框架/附加阻尼比
Key words
combined damping/viscous fluid damper/buckling-restrained brace/steel frame/additional damping ratio
维普
万方数据