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本文论述了求柱子的有效长度和刚度的简单近似公式,可用于稳定性分析和框架的侧移计算,包括填充墙效应。本文还确定了现行的设计图表和建议公式的应用范围。超出此范围时,推荐采用Grinter的替代框架和一个简单而准确的公式来计算其位移。在侧向偏心荷载的作用下,用层间刚度法来求稳定性。本文还为撑系框架和侧移框架给出了柱子的有效长度表。
This article discusses a simple approximation formula for the effective length and stiffness of a column, which can be used for stability analysis and frame sideshift calculations, including the effect of infill walls. This article also identifies the scope of application of the current design charts and proposed formulas. Outside this range, it is recommended to use Grinter’s alternative framework and a simple and accurate formula to calculate its displacement. Under the action of the lateral eccentric load, the interlaminar stiffness method is used to seek stability. This article also gives the effective length of the column for the stay frame and the side shift frame.