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在高层建筑结构计算中，若结构的轴力较大而侧向刚度较小时，其二阶效应不可忽略。针对框一剪结构的二阶分析，本文推导出了一个非常简明的基本微分方程，在形式上，此方程只是一阶理论时框一剪结构基本微分方程的简单推广。此方程在应用上特别简便，此外，方程中的“二阶效应系数”正确反映了产生二阶效应的诸因素的影响。文末附有算例。
In high-rise building structure calculations, if the axial force of the structure is large and the lateral stiffness is small, the second-order effects cannot be ignored. For the second-order analysis of frame-shear structure, this paper deduces a very concise basic differential equation. In terms of form, this equation is only a simple extension of the first-order theory of the basic differential equation of frame-shear structure. This equation is particularly easy to apply. In addition, the “second-order effect coefficients” in the equation correctly reflect the effects of various factors that produce second-order effects. There are examples at the end of the text.