Abstract Semi-rigid angle joints, in their different configurations, constitute a highly interesting alternative to other typologies like end plate joints. However, they are not widely used in the customary practice of European steel construction. The assembly of these joints is simple and cost effective, and they are a good choice in deconstruction and seismic designs. The stiffness of cleat angle joints can be increased either by preloading the bolts or by adding stiffeners to the angles. The development of theoretical models to evaluate both the stiffness and the resistance of these joints depends essentially on the existence of sufficient experimental evidence to validate them. Although there is already a reasonable number of tests on semi-rigid angle joints, this is not so in the case of joints with stiffened angles. Therefore, this study displays the results of experiments consisting of eight tests on stiffened angle joints. Moreover, an analytical model to predict the rotational stiffness, based on the Eurocode 3 Component Method according to a non-aligned model, is proposed. In this approach, a previously developed plate model is introduced to assess the axial stiffness of the top angle in bending. In addition, a new component that takes into account the stiffener in compression is presented. The proposed methodology is successfully validated with tests from the experimental work, as well as with previous tests from other researchers.

中文翻译：

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梁柱加劲角节点机械刚度预测

摘要 半刚性角接头以其不同的配置构成了端板接头等其他类型的一种非常有趣的替代方案。然而，它们并未广泛用于欧洲钢结构的惯例。这些接头的组装简单且具有成本效益，它们是解构和抗震设计的不错选择。夹板角接头的刚度可以通过预加载螺栓或向角钢添加加强筋来增加。评估这些关节刚度和阻力的理论模型的开发基本上取决于是否存在足够的实验证据来验证它们。尽管对于半刚性角接头已经有合理数量的测试，但对于带有加劲角接头的情况却并非如此。所以，本研究展示了由八项加筋角接头测试组成的实验结果。此外，根据非对齐模型，基于欧洲规范 3 组件方法，提出了一种预测旋转刚度的分析模型。在这种方法中，引入了先前开发的板模型来评估弯曲中顶角的轴向刚度。此外，还提供了一个新组件，该组件将压缩中的加劲肋考虑在内。所提出的方法已通过实验工作的测试以及其他研究人员的先前测试成功验证。被提议。在这种方法中，引入了先前开发的板模型来评估弯曲中顶角的轴向刚度。此外，还提供了一个新组件，该组件将压缩中的加劲肋考虑在内。所提出的方法已通过实验工作的测试以及其他研究人员的先前测试成功验证。被提议。在这种方法中，引入了先前开发的板模型来评估弯曲中顶角的轴向刚度。此外，还提供了一个新组件，该组件将压缩中的加劲肋考虑在内。所提出的方法已通过实验工作的测试以及其他研究人员的先前测试成功验证。