Abstract A novel typology of steel shear panel based on a web plate perforated according to Rectangular-Shaped Links (RSL) with internal links is proposed, to act as an energy dissipation element and improving the progressive overstrain behavior of typical shear plates. Preliminary experimental tests were carried out to investigate the behavior of the proposed system and to determine the influence of the main design parameters on the hysteretic response of tested specimens. The obtained outcomes evidenced that the shear strength, the stiffness and energy dissipation capacity of proposed shear panels are consistently influenced by overstrain in bending around the rectangular-shaped links, due to the slenderness of internal links. In particular, two different buckling modes were identified, namely global shear buckling of the plate, which is partially dissipative, and lateral-torsion buckling of individual rectangular-shaped links and internal links, which may result fully dissipative. Then, a FEM model has been implemented and validated according to the experimental results. Therefore, a parametric analysis has been carried out, considering the main parameters affecting the cyclic response of the specimen. The obtained outcomes allowed to conclude that the polar moment of inertia of links could be used together with the plate thickness to control the hysteretic performance of RSL specimens. In particular, the increasing of the width of internal links could allow the activation of global buckling of the plate, which generally causes significant pinching of hysteretic cycles. Based on the conducted parametric analyses, optimum web plate slenderness ratio and polar moment of inertia of links have been identified, providing useful suggestions for design of the proposed shear panel typology. In addition, an equation to predict the yielding shear strength of these kinds of shear panels has been suggested.

中文翻译：

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内矩形连接钢剪力板的滞回性能

摘要 提出了一种新的钢剪力板类型学，其基于带内部连杆的矩形连杆 (RSL) 穿孔腹板，作为能量耗散元件并改善典型剪力板的渐进超应变行为。进行了初步实验测试，以研究所提出系统的行为，并确定主要设计参数对测试样品的滞后响应的影响。获得的结果表明，由于内部链接的细长，所提出的剪切板的剪切强度、刚度和能量耗散能力始终受到矩形链接周围弯曲过度应变的影响。特别地，确定了两种不同的屈曲模式，即板的整体剪切屈曲，这是部分耗散的，以及单个矩形链接和内部链接的横向扭转屈曲，这可能导致完全耗散。然后，根据实验结果实现并验证了有限元模型。因此，进行了参数分析，考虑了影响试件循环响应的主要参数。获得的结果允许得出结论，连杆的极惯性矩可以与板厚度一起使用，以控制 RSL 试样的滞后性能。特别是，内部链接宽度的增加可能会激活板的整体屈曲，这通常会导致滞后循环的显着收缩。根据所进行的参数分析，已经确定了最佳腹板长细比和连杆的极惯性矩，为所提议的剪切板类型的设计提供了有用的建议。此外，还提出了预测这些类型剪切板的屈服剪切强度的方程。