L型钢框架结构地震响应分析

Seismic response of L-shaped steel frame structure

采用SAP2000软件建立L型钢框架结构模型,并对该模型进行模态分析、反应谱分析和时程分析。通过所得的结构自振周期及振型质量参与百分比分析出结构的平扭情况,通过比较结构楼层位移及层间位移角得出结构的薄弱层和整体刚度,进而对结构的抗震性能进行评估并判断结构的安全性。

The model of L-shaped steel frame structure was established by SAP2000 Software , and modal anal-ysis , response spectrum analysis and time history analysis were carried out. According to the percentage of the structures natural vibration and the proportion of the vibration type , the structure s torsioweak layer and the whole stiffness of the structure are obtained by comparing the structand the interlayer displacement angle , then the seismic performance of the structure is evaluated and the safety of the structure is judged.