钢管脚手架的连接扣件力学性能试验研究

Experiment research on mechanical properties about the joint of steel tube scaffolds

通过对钢管脚手架直角扣件的扭转试验,研究其加载卸载规律及安装预紧扭力对其力学性能的影响,并对试验中离散数据进行线性回归分析,得到标准扣件的抗扭转刚度系数94.5<k<11 7.8牛·米/度,置信度为90%

By the torsion test,the mechanical properties of the right angle joints of the steel tube scaffolds are researched in this article.According to linear regression analysis,the author obtains the torsional stiffness coefficient,its confidence is ninety per cent.