单伸臂钢梁整体稳定分析中等效计算长度系数的确定

The definition of the equivalent calculated length coefficient of the mono-overhanging beam in the analysis of its overall stability

利用能量法推导出单伸臂梁的总势能方程 ,得出了其整体稳定计算时的临界弯矩计算公式。通过引入等效计算长度系数 ,找出了影响伸臂梁整体稳定设计中等效计算长度系数的主要因素 ,进而提出了等效计算长度系数的计算公式。

In the paper, the formulas of the total potential energy of the mono-overhanging beam are deduced from variational calculation, and the formula of the critical moment of the overall stability of the mono-overhanging beam is obtained. By introducing the equivalent calculated length coefficient of the overall stability and finding out the major influencing factors, the formula of is presented.