Abstract A rocking steel frame is proposed in this paper, which can reduce the plastic deformation of the main structural components under strong earthquake actions and can be easily repaired after earthquakes. Three 1:2 testing steel frames (buckling-restrained braced steel frame, rocking steel frame with rigid beam-column joint and rocking steel frame with semi-rigid beam-column joint) are designed and manufactured. The pseudo-static tests on the three specimens are carried out respectively. The hysteretic curves, skeleton curves, stiffness degradation rules and other parameters of the three specimens are compared and analyzed to study the seismic performance and damage characteristics of the rocking steel frame. The effect of beam-column joint form on the seismic performance of the rocking steel frame is investigated. In addition, the corresponding numerical analysis and modelling methods are introduced. The results indicate that the rocking structure can effectively reduce the damage of beams and columns. The RBS (rigid beam-column joint with reduced beam section) on the beam end can effectively transfer plastic hinge to the beam end, thus protecting the beam-column joints. It can be also concluded from the results that compared with rigid beam-column joint, semi-rigid beam-column joint has greater superiority and better seismic performance, which can protect the main components more effectively.

中文翻译：

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地震激发下不同节点摇摆钢框架抗震性能试验与数值研究

摘要 本文提出了一种可在强震作用下减小主要结构构件塑性变形且震后易于修复的摇摆钢框架。设计制造了三个1:2试验钢框架（抗屈曲支撑钢框架、刚性梁柱节点摇摆钢框架和半刚性梁柱节点摇摆钢框架）。分别对三个试件进行了拟静力试验。对三种试件的滞回曲线、骨架曲线、刚度退化规律等参数进行对比分析，研究摇摆钢框架的抗震性能和损伤特性。研究梁柱节点形式对摇摆钢框架抗震性能的影响。此外，介绍了相应的数值分析和建模方法。结果表明，摇摆结构能有效减少梁柱的破坏。梁端的RBS（减梁截面刚性梁柱节点）可以有效地将塑性铰传递到梁端，从而保护梁柱节点。由结果还可以得出结论，与刚性梁柱节点相比，半刚性梁柱节点具有更大的优越性和更好的抗震性能，可以更有效地保护主要构件。梁端的RBS（减梁截面刚性梁柱节点）可以有效地将塑性铰传递到梁端，从而保护梁柱节点。由结果还可以得出结论，与刚性梁柱节点相比，半刚性梁柱节点具有更大的优越性和更好的抗震性能，可以更有效地保护主要构件。梁端的RBS（减梁截面刚性梁柱节点）可以有效地将塑性铰传递到梁端，从而保护梁柱节点。由结果还可以得出结论，与刚性梁柱节点相比，半刚性梁柱节点具有更大的优越性和更好的抗震性能，可以更有效地保护主要构件。