新型软钢阻尼器的减震性能研究

提出了设计软钢阻尼器的新思路：利用钢板平面内受力提高初始刚度，并通过改变钢板平面几何形状增加变形耗能能力。通过对具有不同几何形状的软钢阻尼器模型进行拟静力往复加载试验研究，验证了此种软钢阻尼器具有良好的塑性耗能性能。数值计算表明，在地震动作用下装有新型软钢阻尼器框架体系具有良好的减震效果。

STUDY ON VIBRATION REDUCTION OF STRUCTURE WITH A NEW TYPE OF MILD METALLIC DAMPERS

A new idea of designing mild metallic damper is presented,it is that to strengthen the initial stiffness by extending the steel plate of the damper in its own plane and to increase the energy-dissipating ability by changing the geometric shape of the steel plate of the damper.Quasi-static tests of five types of mild metallic dampers are carried out.Their hysteric loops between damping force and displacement are measured.The energy-absoring capability of the dampers are analyzed in details in accordance with the experimental results,and two new types of mild metallic dampers are propose.New types of mild metallic damper presented not only provide certain stiffness in normal use,but also are of good ability of the seismic energy dissipation.Responses of high buildungs to earthquake are calculated by using the code with the ANSYS Parametric Design Language(APDL).Numerical simulation results show that this kind of damper is quite effective.