平面不规则结构体系的抗震性能分析

The Seismic Performance of Irregular Plane Structure System

利用Sap2000有限元软件建立L型框架结构模型,在此基础上加上X形支撑,分别进行模态分析,得到布局的基本动力特性。对模型进行双向反应谱分析,得出层间位移和层间位移角等参数。让体系在不同地震波进行弹性时程分析。结果表明加支撑有助于提升平面不规则框架结构的抗震性能。

This paper established L -frame model by using finite element software Sap2000, with the addition of X -frame support. We took modal analysis respectively, and calculated the basic dynamic characteristics. Then analyzed a two - way response spectrum of the model, obtained the displacement and displacement angle and other parameters. Finally we took elastic time processing analysis of the system under different seismic wave. Results showed that the seismic behavior of irregular plane structure was improved by adding braces.