钢框架结构抗震性能分析

Seismic performance analysis of steel frame structure

结合陕西省某一工业用途的钢框架结构,采用结构分析软件SAP2000,建立了实际钢框架结构的三维有限元模型。在不同地震作用下,原钢框架结构的结构位移不能满足规范中对于"多遇"地震的要求。因此,在原结构的水平方向增加中心支撑,并按不同地震作用下的结构响应进行分析。分析结果表明:在原结构水平方向上增加中心支撑后,结构位移和层间位移角均在规范的限制要求内,从而保证了结构的正常使用性能和安全性能。

This article combined with a steel frame structure which is for industrial use in Shaanxi province , established the three- dimensional finite element model of the steel frame structure by the structural analysis software SAP2000. Under different earthquake, the displacement of the structure cannot he the original steel frame structure to meet the requirements for the “frequent” earthquake specification. Therefore, increase the central support in the horizontal direction of the original structure, and the response was analyzed according to different structure under earthquake. The analysis results show that, after increasing the central support in the horizontal direction after the original structure, the structural displacement and inter story displacement angle are in standard limit requirements, to ensure the normal use and safety performance of structure.