平面非规则钢框支撑结构消能减震分析

Energy Dissipation Analysis of Irregular Steel Frame Brace Structure

简述了常用的结构抗震分析理论,并结合某一平面L型非规则钢框支撑结构,运用有限元分析软件SAP2000对L型钢框支撑结构和增设粘滞阻尼器的钢框支撑结构进行反应谱分析、罕遇地震作用下的非线性时程分析。分析结果表明增设粘滞阻尼器以后结构的抗震性能得到显著提升,符合"大震不倒"的抗震设防标准。

This paper briefly introduces the basic principle of energy dissipation damping,the basic construction of viscous dampers and its restoring force model,at the same time,this paper expounds the seismic analysis theory which is commonly used. Taking one irregular L-shaped steel frame supporting structure as a case,by using the finite element analysis software SAP2000,a response spectrum analysis of L-shaped steel frame supporting structure and steel frame supporting structure with viscous dampers,and a nonlinear time history analysis under rarely earthquake are carried out. Results show that after adding viscous dampers structure seismic,the performance improved significantly,and the result is up to requirement of no collapsing with strong earthquake.