耗能减振结构的抗震分析与设计方法

Seismic Design Approaches of Passive Energy Dissipation Systems

基于国内外耗能减振装置的性能试验和耗能减振结构的计算研究并结合我国正在修订的建筑结构抗震规范，讨论了耗能减振结构抗震设计的统一方法。提出了速度相关型线性耗能器和滞变型耗能器等效阻尼和刚度的计算方法，通过大量的计算和比较，研究了耗能减振结构非正交阻尼阵强行解耦的精度和实际应用的可行性；提出了在结构地震反应分析的振型分解反应谱法中耗能器可统一归结为结构附加振型阻尼比的方法；并采用文中提出的耗能减振结构弹性和弹塑性地震反应分析方法，将耗能减振结构的抗震设计转化为普通结构的抗震设计。

Based on performance experiments of energy dissipation (ED) devices and numeric research on passive ED systems at home and abroad,and combined with Chinese aseismic design code being revised,an uniform aseismatic design method of structures with ED devices is presented.Firstly,computational methods of equivalent damping and stiffness of velocity dependent and hysteretic energy dissipators (EDORs) are established.Secondly,the accuracy and feasibility of forcing decoupling method of non classical damping matrix of ED system is analyzed.A modal decoupling response spectrun method in which EDORs can be considered to provide additional modal damping ratio of structures.Thirdly,design process of ED structures is transformed to that of common structures,based on the establishment of analysis methods of elastic and elastoplastic seismic response of ED system.