肘节式支撑钢框架非线性时程分析

Nonlinear time history analysis of toggle-brace-damper frame

在肘节式支撑上附加软钢阻尼器,进行3种地震波罕遇地震作用下的时程分析,同时与附加相同阻尼器的人字形支撑作比较,说明肘节式耗能支撑消能减振性能的优越性,并通过参数分析,得出软钢阻尼器中无量纲参数kdb0/k0,xdby/xy及其第二刚度系数α对阻尼器减振效果的影响规律。

Compared with the chevron brace used the same dampers,this paper had a nonlinear time analysis of a toggle-brace-damper configuration with metallic dampers for the case of three kinds of earthquake infrequently, and illustrated the seismic resistance ability of the toggle-brace-damper systems. By analyzing the parameters of the dampers ,we know that, kdb0/k0 ,xdby/xy and the post yield stiffness ratio ot have an effect on seismic control of the dampers.