Abstract This paper investigates the moment-rotation behavior of scaffold joints with different configuration. The experimental parameters include type of joint, specification and height of standing tube, and corroded or not. The test results show that although the disk-lock connection and cuplok connection are both semi-rigid joints, there are great differences in moment resistance and moment-rotation characteristic for them. The average load-bearing capacity and initial rotation stiffness of cuplok connections are about 1.8 and 2.9 times the disk-lock joints with D48 standards, respectively. Corrosion of the components may lead to a significant reduction of about 50% both in moment resistance and initial rotation stiffness. Based on the test results, a two-stage four-parameter moment-rotation model for the scaffold joints was proposed, which could well simulate the characteristics of the rotational stiffness.

中文翻译：

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圆盘锁与cuplok钢管脚手架连接性能研究

摘要 本文研究了不同构型脚手架接头的力矩-旋转行为。实验参数包括接头类型、立管规格和高度、腐蚀与否。试验结果表明，虽然圆盘锁连接和杯锁连接都是半刚性连接，但它们的力矩阻力和力矩-旋转特性存在很大差异。杯形锁接头的平均承载能力和初始旋转刚度分别是符合 D48 标准的圆盘锁接头的 1.8 倍和 2.9 倍。部件的腐蚀可能导致力矩阻力和初始旋转刚度均显着降低约 50%。根据试验结果，提出了脚手架关节的两阶段四参数力矩-旋转模型，