半刚性节点取值对高大模板支撑体系极限承载能力的影响

随着经济的发展，扣件式模板支架应用的越来越广泛。然而由于施工缺陷扣件式模板支架的直角扣件达不到进一步相应规范要求，由此引发的安全事故越来越严重。直角扣件是介于刚接和铰接的半刚性节点，资料表明半刚性节点的取值对其极限承载力有一定的影响。文中运用特征值屈曲分析，结合数值分析方法，进一步探究与极限承载力的关系。研究表明，拧紧力矩较小时，初始转动刚度值的变化对承载力影响非常显著，性扣件式模板支撑体系的极限承载力值随半刚性值的增大呈非线性增大。

The impact analyse between ultimate bearing capacity with semi-rigid node of fasteners template scaffold

With the development of economy,fasteners template scaffold are more and more widely used. Duing to the construction, defects, however,right-angle fastener of fasteners template scaffold can not meet the corresponding requirement specification ,which lead more and more safety accidents. Right-angle namely called Semi-rigid nodesis between that of rigid connection and hingedconnection. Existing data show that the value of semi-rigid nodes have a certain influence on the ultimate bearing capacity.Using eigenvalue buckling analysis and numerical analysis methods, this paper explorefurther the relationship between semi-rigid nodes and ultimate bearing capacity. Studies have shown that the initial rotational stiffness has a very significant effect on bearing capacity when tightening torque is small ,and moreover,ultimate bearing capacity of the fasteners template scaffold increases non-linearly with the increase of semi-rigid.