Abstract Shear links is a kind of commonly used energy dissipation component of which the yield force is always multiplied by a hardening factor to check the capacity of gusset plates and embedded parts or other connecting components. If the overstrength fact due to hardening is underestimated, there are safety hazards. In this paper, three tests on I-shaped shear links with the LYP100 steel web are carried out. The specimens are designed with three extremely small length ratio to expand the range of existing data. Through the finite element analysis model, the contribution of the flange to the shear force of the links is further studied, and a schematic diagram of the theoretical study is given. Based on the parameters of the material combined hardening model, an analytical model formula for evaluating plastic overstrength and calculating lower bound and upper bound of plastic hardening is proposed. The orthogonal finite element analysis of five geometric parameters (web thickness, length of link, flange width , flange thickness , web plate height) is conducted for obtaining the overstrength factors and determining the parameters of the analytical method. The method and formulas are assessed, showing satisfactory accuracy.

中文翻译：

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全长比范围内剪切连杆塑性超强度试验与分析研究

摘要 剪力连杆是一种常用的耗能构件，其屈服力总是乘以硬化系数，以检查节点板和预埋件或其他连接构件的能力。如果低估了由于硬化导致的超强度事实，则存在安全隐患。在本文中，使用 LYP100 钢腹板对 I 形抗剪连杆进行了三个试验。试件设计了三个极小的长度比，以扩大现有数据的范围。通过有限元分析模型，进一步研究了翼缘对连杆剪力的贡献，并给出了理论研究的示意图。基于材料组合硬化模型的参数，提出了评价塑性超强和计算塑性硬化下界和上界的解析模型公式。对五个几何参数（腹板厚度、连杆长度、翼缘宽度、翼缘厚度、腹板高度）进行正交有限元分析，以获得超强系数并确定分析方法的参数。对方法和公式进行了评估，显示出令人满意的准确性。