A new type of self‐centering beam‐column joint with installed steel arc plates is proposed in this study. First, mechanical behavior of the self‐centering joint using prestressed steel strands to provide the centering force is theoretically analyzed in detail, followed by experimental validation. New joints with different arc plate parameters are designed and tested under cyclic loading. Test results show that the hysteretic curve of the new joint exhibits typical characteristic of self‐centering capacity. By parametric analysis of five design parameters of the arc plate, it is found that vector height has the greatest influence on the joint's moment‐rotation skeleton curve, which is consistent with experimental findings. A simplified model of the joint is built in OpenSees to simulate its hysteretic behavior, which agrees well with the tested results. To demonstrate the effectiveness of the new joint to improve the seismic performance of the overall structure, a series of nonlinear time history analysis on a steel frame structure with the new joint under earthquakes are conducted, which show that the joint is particularly effective in reducing the residual interstory drift response.

中文翻译：

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钢框架结构新型自定心梁柱节点研究

这项研究提出了一种新型的自定心梁柱节点，并安装了钢制的弧形板。首先，理论上详细分析了使用预应力钢绞线提供定心力的自定心接头的力学行为，然后进行了实验验证。设计并测试了具有不同弧板参数的新型接头，并在循环载荷下进行了测试。试验结果表明，新接头的磁滞曲线具有典型的自定心能力。通过对弧形板五个设计参数的参数分析，发现矢量高度对节点的矩-转骨架曲线影响最大，与实验结果一致。OpenSees中内置了一个简化的关节模型来模拟其滞后行为，这与测试结果非常吻合。为了证明新接头对改善整体结构的抗震性能的有效性，在地震作用下，对带有新接头的钢框架结构进行了一系列非线性时程分析，表明该接头在减少地震作用方面特别有效。残余的层间漂移响应。