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工程力学  2015 

驶入式钢货架立柱计算长度系数分析

DOI: 10.6052/j.issn.1000-4750.2014.04.0264, PP. 130-137

Keywords: 驶入式货架,立柱,计算长度系数,弹性屈曲荷载,转动刚度,侧向刚度

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Abstract:

驶入式货架立柱在垂直货物通道方向上的计算长度系数受多种因素影响。首先,对于上端受水平位移约束而下端受扭转约束的单柱模型,推导了弹性屈曲荷载计算公式。计算结果表明,当模型中约束刚度较小时,约束刚度的变化对立柱计算长度系数产生明显影响。此后,采用有限元分析方法分析了单列立柱模型的弹性屈曲荷载,得到立柱的计算长度系数。柱列模型中的牛腿梁和荷载分布不均现象均可以提高模型的弹性屈曲荷载。基于数值计算结果,得到了立柱计算长度系数的简化计算公式。若已知立柱柱脚转动刚度和支撑体系侧向刚度,可由此公式计算立柱的计算长度系数。

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