分析钢框架结构时考虑二阶效应,得到的截面内力及位移通常比采用一阶分析方法计算的结果偏大。对于承受相同荷载、具有相同几何条件的结构,如采用一阶分析方法计算得到的位移满足现行规范的水平侧移限值,但采用二阶分析方法后不一定满足该侧移限值的规定,因此在规范中补充有关二阶分析时侧移限值的相关规定尤为必要。针对钢框架结构考虑二阶效应后层间侧移限值的取值进行了研究,结合规范中的二阶分析方法及可靠度理论,提出了钢框架结构二阶层间侧移限值,供规范修订及工程应用参考。 The second-order effect is considered in the analysis of the steel frame structure. The resulting internal forces and displacements are usually larger than those obtained by the first-order analysis. For a structure with the same load and with the same geometrical conditions, the displacement calculated by the first-order analysis method satisfies the horizontal displacement limit of the current code, but the second-order analysis method does not necessarily meet the requirement of the lateral displacement limit, Therefore, it is necessary to supplement the norms with the relevant provisions of the lateral shift limit in second-order analysis. Considering the second-order effect of the steel frame structure considering the second-order effect of the lateral displacement limit value of the study, combined with the second-order analysis method and reliability theory in the specification, put forward the steel frame structure of the second- Revision and engineering application reference.