该文针对平面钢框架高温下结构性能的分析问题,采用求积元法发展了钢框架高温结构性能分析的理论并编写了平面框架结构的火灾高温响应的分析程序。求积元法适用于高效的非线性分析,且有建模简单的特点,对每个杆件仅采用一个单元即可。经与有限元分析程序ABAQUS对比表明,采用求积元法用较少的自由度数即可达到非常高的分析精度要求,因此比传统的有限元法更适用于结构火灾分析。 In this paper, in order to analyze the structural performance of flat steel frame under high temperature, the theory of high temperature structural performance analysis of steel frame was developed by using the method of quadrature element, and the analysis program of high temperature response of flat frame structure was compiled. The quadrature method is suitable for efficient non-linear analysis and has the advantage of modeling simplicity with only one unit for each rod. Compared with the ABAQUS finite element analysis program shows that the use of the method of integration with fewer degrees of freedom to achieve very high accuracy requirements, and therefore more than the traditional finite element method is more suitable for structural fire analysis.