【摘要】 设计轮扣式钢管支模架节点半刚性水平力加载试验。选用3组试件,通过对试验现象和所得数据的分析及与扣件式钢管脚手架节点刚度的对比分析,得到结论:轮扣式钢管脚手架节点具有典型的半刚性连接特性,轮扣式钢管脚手架节点的半刚性受不同搭设间距的影响较小;当节点弯矩在控制弯矩的20%以下时,节点的初始连接刚度变化波动略大;当超过20%时,节点连接刚度曲线趋于稳定一致;得到的3组试件节点的连接刚度相当于扣件式钢管脚手架在扣件拧紧力矩40 N.m时的连接刚度。轮扣式钢管脚手架连接稳定性好,搭设质量优于传统的扣件式钢管脚手架。更多还原

【Abstract】 It was designed an experiment on semi-rigid horizontal force joints of pulley-clip supporting frame through three groups of specimens.By the analysis of experimental phenomena and data as well as the comparisons with joints rigidity of steel tubular scaffolding,following conclusions were obtained: the joints of pulley-clip supporting frame are typical semi-rigid connections,its semi-rigidity is little affected by the different erection distances;the fluctuation of initial connection stiffness of joints is slightly large,when the joint moment is lower than the 20 percent of the control moment;but with over 20 percent of the control moment,the connection stiffness tends towards to be steady;the connection stiffness of the three groups of specimens is equivalent to that of steel tubular scaffolding with tightening torque of 40 N·m,and the stability and erection quality of pulley-clip supporting frame is better than the traditional steel tubular scaffolding.更多还原