摘要
利用复模量阻尼理论研究粘滞阻尼器和粘弹性阻尼器与斜撑串联的复合阻尼元件对结构减振效果的参数影响及耗能减振体系反应分析的简化计算方法。首先,采用复模量方法对两类阻尼器与斜撑串联的复合元件阻尼特性进行了分析;然后确定了影响阻尼器减振效果的复模量参数,得到了耗能减振系统中阻尼器实际发挥作用的参数影响量化关系式;第三,建立了阻尼器与斜撑串联的复合元件等效模型,提出了速度相关型耗能减振体系反应分析的简化方法;最后,通过对单自由度耗能减振体系的地震反应进行数值计算,验证了简化分析方法具有良好的计算精度。
The parameter analysis and simplified response analysis method for passive energy dissipation systems with velocity-dependent dampers such as viscous and viscoelastic dampers are studied by employing the complex damping theory. The complex damping properties are analyzed for the combined damping elements of brace and viscous dampers or viscoelastic dampers in series. The complex damping parameters influencing the energy dissipation effectiveness of dampers in the combined element are determined and the analytical relationship of the parameters and effectiveness are obtained. An equivalent model of the combined damping element is established and a corresponding simplified response analysis method for passive energy dissipation systems with velocity-dependent dampers is put forward. The seismic responses of single-degree-of-freedom passive energy dissipation systems with viscous and viscoelastic dampers are analyzed, respectively, and the simplified method is verified.
出处
《工程力学》
EI
CSCD
北大核心
2004年第4期6-12,5,共8页
Engineering Mechanics
基金
国家自然科学基金项目(50038010)
国家863青年基金项目(2001AA616120)资助
