摩擦阻尼器和TMD共同作用下的钢框架的减震分析

Vibration Reduction Analysis of the Steel Frame under the Action of Friction Dampers and TMD

研究采用质量调谐减震原理,将填充墙作为TMD的质量块,摩擦阻尼器作为其耗能原件提供刚度和阻尼,结合TMD和摩擦阻尼器属性,实现两者的共同耗能。为观察这种新型减震装置在框架结构中的耗能效果,本文利用有限元分析软件ETABS对安装有减震装置的钢框架以及未安装该装置的框架结构,进行罕遇地震下的时程分析。计算结果表明:安装有该装置的结构的顶层位移角最大能减小约70%,并且满足罕遇地震下规范位移角的限值,具有很好的减震耗能效果。

The principles of quality tuning shock absorber was used to fill the wall as a mass of TMD friction dampers as part of its original energy provides stiffness and damping, Friction damper of combination of TMD and properties, implementation of common energy-consuming. In order to observe the structure of energy consumption in the framework of this new type of shock absorber in effect, using finite element analysis software ETABS was used to conducted under rare earthquake time history analysis to the steel framework fitted with shock-absorbing device and a the framework uninstalled with the device. Results show that the displacement of the top level of tile structure installed maximally can decrease to about 70%, and meet the specifications under rare earthquake dis- placement angle limits, with good damping effect.