钢梁阻尼器的最佳延性率及其控制

基于双线性和三线性的力－位移滞回线假设，导出了钢梁阻尼器隔震系统等效阻尼比与阻尼器延性率的关系；为了获得大阻尼比隔震系统，以尽量减小隔震系统的地震反应，求得了使系统阻尼比为最大的阻尼器相应延性率（即最佳延性率）所需满足的条件；给出了在给定地震地面运动输入条件下，使系统阻尼器变形位移达到最佳延性率的阻尼器初始刚度和屈服位移的确定方法。

OPTIMUM DUCTILITY OF STEEL BEAM DAMPER AND ITS CONTROL

Based on assumption of bilinear and trilincar force displacement hystcrctic loop the relationship between equivalent damping ratio of seismic isolation system with steel beam damper and ductility of the damper is derived. To realize the seismic isolation system with large damping ratio for reducing seismic response of the system the optimum ductility condition which the ductility of the damper should satisfy for making damping ratio of the system maximum is presented. Finally the method to determine initial stiffness and yielding displacement of the damper for damper displacement getting optimum ductility under ground motion is provided.