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Scocket节点和螺栓球节点是广泛用于空间结构中的典型半刚性节点,对15个此类节点进行试验研究。其中,3个Scocket节点受弯矩和剪力共同作用,7个Scocket节点和5个螺栓球节点受弯矩、剪力和轴向压力共同作用。对不同工况下各节点弯矩-转角关系的主要特征进行总结和讨论。结果表明:1)Scocket节点和螺栓球节点有很好的抗弯刚度;2)轴向压力提高了节点的初始抗弯刚度;3)轴向压力对不同节点抗弯承载力的影响不同;4)由于轴向压力的作用,节点弯矩–转角曲线屈服过程的时间缩短。
Scocket nodes and bolted-ball nodes are typical semi-rigid nodes that are widely used in space structures and 15 such nodes are experimentally studied. Among them, three Scocket nodes are affected by bending moment and shear force, and seven Scocket nodes and five bolted ball joints are affected by bending moment, shear force and axial pressure. The main features of moment-rotation relationship of each node under different working conditions are summarized and discussed. The results show that: 1) Scocket nodes and bolted ball joints have good flexural rigidity; 2) axial compression increases the initial bending stiffness of the joints; 3) axial pressure has different effects on flexural capacity of different joints; 4 Due to the effect of axial pressure, the bending moment of the nodal-corner curve is shortened during the yielding process.