The seismic performance of steel-plate concrete (SC) shear walls is numerically investigated for various SC wall geometrical shapes. Steel faceplates and infill concrete are two main components of SC walls; a full connection between steel and concrete is required for composite action. A comprehensive set of SC wall specimens with different cross-sectional shapes and geometrical properties were tested in the literature for evaluating their seismic behavior. The numerical responses of 17 tested SC walls, including rectangular, T-shaped, and flanged walls, isolated and coupled walls, with and without boundary elements and endplates, subjected to cyclic lateral loading and a wide range of axial load ratio from 0.065 to 0.4, are evaluated using a finite element-based software, LS-DYNA. The predicted force-displacement diagrams, failure modes, and damping ratios of the finite element models reasonably match the test observations. Also, three main analysis and design issues are evaluated, including the effect of coefficient of friction between concrete and steel faceplates, the effect of modeling pullout of shear studs from the concrete on the global response of SC walls, and the importance of the presence of shear studs and tie rods and the possible changes that may happen by changing the connector spacing to faceplate thickness ratio.

中文翻译：

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矩形和翼缘钢-混凝土剪力墙在循环荷载作用下的有限元分析

针对各种 SC 墙几何形状，对钢板混凝土 (SC) 剪力墙的抗震性能进行了数值研究。钢面板和填充混凝土是 SC 墙的两个主要组成部分；复合作用需要钢和混凝土之间的完整连接。在文献中测试了一组具有不同横截面形状和几何特性的综合 SC 墙试样，以评估它们的抗震性能。17 个测试的 SC 墙的数值响应，包括矩形、T 形和法兰墙，隔离和耦合墙，有和没有边界单元和端板，受到循环横向载荷和从 0.065 到 0.4 的广泛轴向载荷比, 使用基于有限元的软件 LS-DYNA 进行评估。预测的力-位移图、失效模式、有限元模型的阻尼比与测试观测值合理匹配。此外，还评估了三个主要分析和设计问题，包括混凝土和钢面板之间摩擦系数的影响、从混凝土中拔出剪力钉的建模对 SC 墙整体响应的影响以及存在的重要性剪力螺栓和拉杆以及通过改变连接器间距与面板厚度比可能发生的变化。