The seismic response of a steel moment frame (SMF) highly depends on the characteristics of structural members and detailing of connections. It is believed that proper performance of the panel zone significantly contributes to the ductile behavior of special and intermediate moment frames subjected to seismic loads. The main objective of this paper is to study the effect of panel zone on the behavior of moment frames and to investigate whether or not one can ignore panel zones in a finite element model of a steel frame. Through a vast investigation, two models for representing a panel zone were selected. The paper studies the impact of either of these two selected models on the simulated behavior of the same structure. Consequently, a nonlinear rotational spring is used for modeling the behavior of the panel zone. Finally, as a case study, the effects of modeling panel zones in SMFs are investigated. By studying the behaviors of two specific frames, a comparison between computed results obtained by considering different analytical models for the panel zone is presented. It is concluded that the effect of strong panel zones on the overall behavior of a structure is limited.

中文翻译：

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板区对钢矩框架循环横向承载力影响的数值研究

钢力矩框架 (SMF) 的地震响应高度依赖于结构构件的特性和连接细节。据信，面板区域的适当性能对承受地震载荷的特殊和中间力矩框架的延展性能有显着贡献。本文的主要目的是研究面板区域对弯矩框架行为的影响，并研究是否可以忽略钢框架有限元模型中的面板区域。通过大量调查，选择了两种代表面板区域的模型。该论文研究了这两个选定模型中的任何一个对同一结构的模拟行为的影响。因此，非线性旋转弹簧用于模拟面板区域的行为。最后，作为案例研究，对 SMF 中模拟面板区域的影响进行了研究。通过研究两个特定框架的行为，比较了通过考虑面板区域的不同分析模型获得的计算结果。得出的结论是，强面板区域对结构整体行为的影响是有限的。