钢框架高等分析研究综述

为了加深对高等分析的理解,介绍了钢框架现行计算长度设计方法的缺点和高等分析与设计的特点,详细讨论了影响钢框架稳定性和极限承载力的主要因素,如几何非线性、材料非线性、几何缺陷、残余应力、局部屈曲、弯扭屈曲等,以及分析时各种因素的考虑方法．同时介绍了国内外在钢框架高等分析方面的研究现状、不足以及可能的发展趋势,为钢框架结构整体分析与设计方法的研究提供一些理论参考．

State of the art of advanced analysis of steel frames

For the sake of better understanding of "advanced analysis", the defects associated with the effective length method, as well as the characteristics of advanced analysis & design of steel frames are introduced in this paper. In addition, factors influencing the stability and the ultimate strength capacity of steel frames, such as geometric nonlinearities, material nonlinearities, geometric imperfections, residual stress, local buckling , flexural - torsional buckling, and so forth, are explicated. Methods for capturing these factors are discussed in detail. The possible development trend as well as the present status and the deficiencies of research on advanced analysis of steel frames are also reviewed, aiming to provide some theoretical reference for research on integral analysis and design of steel frame structures.