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提出一种带摩擦耗能螺栓的梁柱节点,通过开展试验研究与有限元分析,探讨该类节点在往复荷载作用下的滞回性能以及节点域的变形特征。详细介绍了该类节点的有限元建模过程和参数设置,通过对比试验与有限元分析结果,发现数值分析较好地模拟了节点的整个受力和变形过程,验证了有限元分析的可靠性。综合研究结果表明:所提出的梁柱节点能够利用摩擦型螺栓的滑移提高节点的耗能能力,有效减少梁、柱主体构件的损伤,同时预应力筋提供了结构的自复位能力,可以通过更换摩擦型螺栓实现结构功能的快速恢复。
A beam-column joint with friction dissipating bolts was proposed. Through experimental research and finite element analysis, the hysteretic behavior of the joint under cyclic loading and the deformation characteristics of the joint were investigated. The process of finite element modeling and parameter setting for such nodes are introduced in detail. By comparing the results with the results of finite element analysis, it is found that numerical analysis can simulate the whole stress and deformation process of nodes, and verify the reliability of finite element analysis . The results of the comprehensive study show that the proposed beam-column joints can utilize the sliding of the friction bolts to increase the energy dissipation capacity of the joints and effectively reduce the damage of the beam and column body members, and the prestressing tendons provide the structural self-resetting ability by Replacement of friction bolts to achieve the rapid recovery of structural features.