Modelling of the panel zone in steel and composite moment frames
Modelling of the panel zone in steel and composite moment frames
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DOI：
10.1016/j.engstruct.2004.09.008
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发表时间：
2005
影响因子：
5.5
通讯作者：
J. Castro;A. Elghazouli;B. Izzuddin
中科院分区：
文献类型：
--
作者：
J. Castro;A. Elghazouli;B. Izzuddin
本文对钢框架和组合抗弯框架梁柱连接节点的板区区域进行了模拟。首先回顾了现有的表示板区响应的分析模型，并讨论了它们的范围和局限性。然后提出并描述了一种新的方法，该方法特别适合于在框架分析过程中模拟钢和组合节点。在计算弹性和非弹性响应时，该方法合理地考虑了不同边界条件以及剪切和弯曲变形模式的影响。通过与已有实验结果的比较，以及更详细的连续体有限元分析，对所提出的方法进行了验证。结果表明，与现有的模型相比，所开发的方法提供了更真实的行为表示，特别是在组合连接的情况下。结果表明，对于组合节点，常用的简单的弯矩-变形关系可能是不够的。这主要是由于行为依赖于连接处的内力分布。该研究描述了框架分析程序中所建议的方法的实施，并证实了在水平荷载条件下，板区在弯矩框架的响应中所起的重要作用。
This paper deals with the modelling of the panel zone region within beam-to-column connections in steel and composite moment-resisting frames. Existing analytical models for representing the panel zone response are first reviewed and their scope and limitations are discussed. A new approach, which is particularly suited for modelling steel and composite joints within frame analysis procedures, is then proposed and described. The method rationally accounts for the effect of different boundary conditions, as well as shear and flexural deformation modes, in evaluating the elastic and inelastic response. Validation of the proposed approach is carried out through comparisons against available experimental results in addition to more detailed continuum finite element analyses. The results demonstrate that the approach developed provides a more realistic representation of the behaviour in comparison with available models, especially in the case of composite connections. It is shown that, for composite joints, commonly used simple moment–distortion relationships may not be adequate. This is primarily due to the dependency of the behaviour on the internal force distribution at the joint. The study describes the implementation of the suggested approach within frame analysis procedures, and substantiates the important role played by the panel zone in the response of moment frames under lateral loading conditions.