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以5个不同工况的模板支架足尺寸的极限承载力试验研究为基础,引入模板支架的广义初始缺陷,建立三维有限元模型,利用该有限元模型可以较准确地分析模板支架广义初始缺陷对结构稳定性的影响。通过现场测试进一步表明:对于模板支架,结构的整体初始缺陷和构件的初始缺陷对该体系稳定性的影响均可以等效为作用于节点处的等效假想水平力,而且等效假想水平力参与所有的荷载组合。
Based on the experimental study of the ultimate bearing capacity of the template scaffold with five different working conditions, the generalized initial defect of the template scaffold was introduced and the three-dimensional finite element model was established. The finite element model can be used to analyze the generalized initial defect pair Effect of structural stability. The results of on-site tests further show that the influence of the overall initial defects of the structure and the initial defects of the structure on the stability of the system can be equivalent to the equivalent imaginary horizontal force acting on the node, and the equivalent imaginary horizontal force participation All load combinations.