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A simplified method for instability and second-order load effects of framed structures: Story-based approach

机译：框架结构的不稳定性和二阶负载效应的简化方法：基于故事的方法

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摘要

Several building codes such as ANSI/AISC 360-16 and EC3 EN 1993-1-1 require the use of a proper design method to consider instability and second-order load effect problems for individual system elements and the entire structural system. Various methods are available to assess stability. All of these methods should consider P-Delta and P-delta effects (second-order effects). The following calculation procedures are presented in this study: (a) a simplified method is developed for P-Delta and P-delta analysis in regular frames under the effect of constant axial loads to obtain story drifts and end moments; (b) this method can be applied to an entire building or any individual story, that is, story-based design is possible; and (c) column effective length factors are obtained for individual columns. In addition, design tables are presented.
机译：诸如ANSI / AISC 360-16和EC3 EN 1993-1-1993-1-1等几种建筑码要求使用适当的设计方法来考虑个别系统元素和整个结构系统的不稳定性和二阶负载效果问题。各种方法可用于评估稳定性。所有这些方法都应考虑p-delta和p-delta效果（二阶效应）。本研究提出了以下计算程序：（a）在恒定轴向载荷的效果下，在常规框架中为p-delta和p-delta分析开发了简化方法，以获得故事漂移和结束时刻; （b）该方法可以应用于整个建筑物或任何个体故事，即基于故事的设计是可能的; （c）为单个柱获得柱有效长度因子。此外，还提供了设计表。

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