To address the issue of strength and stiffness degradation of steel slit shear walls (SSSWs) after the occurrence of out‐of‐plane buckling at large lateral deformation, a new type of SSSW made by assembling initially twisted steel plate links is proposed in the present work. Three types of SSSW specimens, with vertical slits, narrow rhomboid openings, and initially twisted steel plate links, respectively, were manufactured and tested under quasi‐static cyclic loading. Test results showed that the SSSW assembled by initially twisted steel plate links had no strength degradation and a nearly constant positive second stiffness throughout the whole loading process with a maximum drift ratio of 6%, whereas the other two SSSW specimens exhibited obvious degradation of strength, stiffness and energy dissipation capacity. The new SSSW also had much smaller residual strength, and its deformation capacity was largely improved. The method to predict the elastic stiffness of the new SSSW was proposed, by which the predicted results agreed well with test results. A user‐defined macromodel was developed to simulate its force‐deformation hysteretic behavior.

中文翻译：

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新型带扭杆的新型钢缝剪力墙的研究

为了解决大横向变形发生面外屈曲后钢缝剪力墙（SSSW）的强度和刚度降低的问题，目前提出了一种通过组装初始扭曲的钢板链节制成的新型SSSW工作。分别制造了三种类型的SSSW标本，分别具有垂直缝，窄菱形开口和最初扭曲的钢板连杆，并在准静态循环载荷下进行了测试。测试结果表明，由最初扭曲的钢板链节组装而成的SSSW在整个加载过程中均没有强度降低，并且几乎没有变化，第二刚度几乎恒定，最大漂移率为6％，而其他两个SSSW试样则表现出明显的强度降低，刚度和能量消耗能力。新的SSSW的残余强度也小得多，其变形能力大大提高了。提出了一种新型SSSW弹性刚度的预测方法，预测结果与试验结果吻合良好。开发了用户定义的宏模型来模拟其力变形滞后行为。