Steel plate shear walls (SPSWs) have advantages such as high elastic stiffness, stable hysteresis behavior, high energy absorption capacity, and decent ductility. However, one of the main drawbacks of SPSWs is their buckling under lateral loading. To address this issue, a simple and practical solution in the form of using a trapezoidal plate moment connection (PMC) and a narrow gap between the infill plate and columns is presented. The PMC will act as an energy absorber, similar to a yielding steel plate, and keep the other structural members in an elastic state. Extensive three-dimensional finite element (FE) models of the SPSW system were investigated under monotonic and cyclic loading. The results revealed that by separating the infill plate from the vertical boundary elements and using two vertical edge stiffeners at both edges of the wall, the same lateral bearing capacity of the conventional system can be achieved. In addition, by increasing the thickness of the PMC from 6.5 to 26 mm, the load-bearing capacity, energy dissipation, and elastic stiffness increased approximately 2, 2.5, and 3.2 times, respectively. It was also found that the flexural capacity ratio of the connection to the beam had little effect on the overall force–displacement behavior. However, it can affect the system failure mechanism. Finally, the tension field inclination angle for such SPSWs was proposed in the range of 30 to 35°.

中文翻译：

---

半断开钢板剪力墙与屈服板连接的弯矩抗弯框架的3D有限元数值评估

钢板剪力墙（SPSW）具有诸如高弹性刚度，稳定的滞后性能，高能量吸收能力和良好的延展性等优点。但是，SPSW的主要缺点之一是它们在横向载荷下的屈曲。为了解决这个问题，提出了一种简单实用的解决方案，即使用梯形板矩连接（PMC）以及填充板和立柱之间的狭窄间隙。PMC类似于屈服钢板，将充当能量吸收器，并使其他结构构件保持弹性状态。在单调和循环载荷下研究了SPSW系统的广泛的三维有限元（FE）模型。结果表明，通过将填充板与垂直边界单元分开，并在墙的两个边缘使用两个垂直边缘加强筋，可以实现与传统系统相同的侧向承载能力。此外，通过将PMC的厚度从6.5毫米增加到26毫米，承载能力，能量耗散和弹性刚度分别增加了约2倍，2.5倍和3.2倍。还发现，连接件与梁的挠曲承载力比对整体力-位移行为的影响很小。但是，它会影响系统故障机制。最后，这种SPSW的张力场倾斜角建议在30至35°的范围内。还发现，连接件与梁的挠曲承载力比对整体力-位移行为的影响很小。但是，它会影响系统故障机制。最后，这种SPSW的张力场倾斜角建议在30至35°的范围内。还发现，连接件与梁的挠曲承载力比对整体力-位移行为的影响很小。但是，它会影响系统故障机制。最后，这种SPSW的张力场倾斜角建议在30至35°的范围内。