有剪刀撑扣件式钢管模板支架简化计算方法

摘要

扣件式钢管模板支架的稳定承载力计算理论是工程中亟待解决的一个难题.在分析有剪刀撑扣件式钢管模板支架结构特点的基础上,提出了其稳定承载力的简化计算模型,并推导了简化模型中各参数的计算公式,建立了其简化计算方法.利用两个足尺模型试验研究了有剪刀撑扣件式钢管模板支架的稳定性能,根据试验结果,验证了简化模型的合理性,并将试验结果与简化计算方法得出的结果进行了对比,二者吻合较好,验证了该文的简化计算方法的计算结果能够满足实际工程应用的精度要求,建议考虑将其应用在模板支架规范中.%The calculation theory of stability capacity of steel tube and coupler scaffold is currently an urgent problem to be solved. Based on the analysis of the stability behavior of steel tube and coupler scaffold with X-bracing,a series of simplified model and calculation formulas are put forward. In order to verify the rationality of simplified calculation theory presented, two full-scale tests are carried out. Compared with results from tests, the results from simplified calculation theory is well consistent with it. Therefore, it is concluded that the simplified model and simple formula own a considerable accuracy to forecast the critical load of steel tube and coupler scaffold with X-bracing under uniform load, which offers the reference for relevant researchers and designers.