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STUDY ON STABILITY FACTOR OF STEEL TUBE COUPLER SCAFFOLDS
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摘要: 当前，在计算脚手架用钢管稳定承载力时，轴心受压构件稳定系数大多仍沿用GB 500182002《冷弯薄壁型钢结构技术规范》的取值。资料表明，脚手架与GB 500182002计算中考虑的缺陷和截面存在差异。通过分析国内外相关规范中稳定系数取值，依照规范中综合缺陷数学模式，考虑483.5钢管的截面特性和实际几何缺陷，提出稳定系数修订意见。根据试验所测得结构稳定承载力，对初始弯曲和稳定系数的取值进行研究，并给出建议值。Abstract: In the calculation of stability bearing capacity of scaffold steel tubes,the stability factor of axial compression members mostly still uses the value in the GB 500182002Technical Code of Cold-Formed Thin-Wall Steel Structures.The data show that there are some gaps and differences between the scaffold and GB 500182002 in the calculations,such as,the imperfections and the cross-section.The paper analyzed the stability factor values of domestic and oversea related codes,in accordance with the integrated imperfections standard mathematical model,it is considered the section properties and the actual geometric imperfections of pipe 48 3.5 and it is proposed revisions to the stability factor value.According to the measured structural stability bearing capacity,it was also studied the original curve and the stability factor;and recommended stability factor value were given.
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