[提要]  对考虑楼板变形的变截面框-剪结构的二阶分析问题建立了一个分段连续化的串并联模型，导出其二阶分析的微分方程组，用常微分方程求解器求解。讨论了影响二阶效应的一些因素。
[关键词]  高层建筑结构 二阶分析 楼板变形

A continuous parallel model is taken as the computational model for the second-order analysis of tall frame-shear wall structures with varied sections, considering the floor slab deformation by use of the piecewise technique. The second-order analysis differential equations for the model are then derived. Morever, the second-order displacements and internal forces are determined numerically by means of the ODE (Ordinary Differential Equation) solver, which is a program developed for solving various ODEs. Lastly, the factors that influence the second-order effects are discussed.
Keywords: tall building structure; second-order analysis; floor slab deformation