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为优化对墙内4角采用条形支撑加劲的冷成型钢板(CFS)剪力墙的抗震性能,对其进行了非线性有限元分析。经试验验证的数值模型考虑了不同的结构特性,包括材料非线性、几何缺陷、残余应力和开孔情况。有限元分析结果与试验结果的比较表明,数值模拟能够有效预测条形支撑CFS剪切墙的极限承载力。对支撑长度不同的16个试件进行了研究,主要关注试件的最大水平承载力和变形特性,以及合理地估计地震反应修正系数。就条形支撑CFS剪力墙的最佳抗震性能以及相应的尺寸和形状给出了初步结论。
In order to optimize the seismic performance of cold-formed steel (CFS) shear walls stiffened by strip braces at the four corners of the wall, a nonlinear finite element analysis was carried out. The experimentally validated numerical model considers different structural characteristics, including material nonlinearities, geometric imperfections, residual stresses, and open-hole conditions. The results of finite element analysis and experimental results show that numerical simulation can effectively predict the ultimate bearing capacity of CFS shear walls with bar supports. Sixteen specimens with different support lengths were studied, with the main concern being the maximum horizontal bearing capacity and deformation characteristics of the specimens and a reasonable estimation of the seismic response correction factor. The preliminary conclusions are given on the best seismic performance of bar-supported CFS shear walls and their corresponding size and shape.