T型不规则钢框架结构的地震响应分析

Seismic response analysis of T type irregular steel frame structure

建立三个T型不规则钢框架结构,分别为不设支撑、在Y方向设置单斜杆支撑、在Y方向设置人字形支撑的T型不规则钢框架结构。通过SAP2000分别进行模态分析、反应谱分析、时程分析探讨是否设支撑和设置不同支撑对钢框架结构的地震响应分析及动力特性的影响。结果表明:设置支撑后减震效果提高,人字形支撑比单斜杆支撑减震效果好,并且最大层间位移角均位于第五层。

The structure of three T-shaped steel frames is established, which is a T-type irregular steel frame structure with no support, a single oblique strut in y direction and herringbone support in the y direction. Through SAP2000, the modal analysis, response spectrum analysis and time-history analysis were used to study whether the seismic response analysis and dynamic characteristics of steel frame structures were suppor- ted and set up by different supports. The results show that the damping effect of the brace is improved, the effect of the herringbone support is better than that of single oblique strut, and the maximum interlayer dis- placement angle is in the fifth layer.