Despite the considerable advantages of SPSW, there were some shortcomings concerning the system. Needing huge columns surrounding the infill plate has been the main dilemma of the SPSW system. This problem will be due to high imposed stresses to columns by the infill plate. Perforated SPSW has shown a capable method among the proposed methods to reduce applied forces to SPSW's columns. In this paper, the optimum configuration of holes was investigated experimentally and numerically. Results indicated that the imposed forces to columns are reduced by increasing of hole area. The ultimate strength and energy absorption of perforated SPSW also are reduced by increasing of hole area. Therefore, the optimum configuration was proposed to achieve a minimum reduction in structural parameters and maximum reduction in column forces. Besides, new relations were proposed to calculate the structural parameters of the perforated SPSW. The proposed relations showed a good agreement with finite element results.

尽管 SPSW 具有相当大的优势，但该系统也存在一些缺点。填充板周围需要巨大的柱子一直是 SPSW 系统的主要困境。这个问题是由于填充板对柱施加了高应力。在建议的方法中，穿孔 SPSW 已显示出一种有效的方法来减少施加到 SPSW 柱上的力。在本文中，孔的最佳配置通过实验和数值进行了研究。结果表明，随着孔面积的增加，施加到柱上的力减小。穿孔 SPSW 的极限强度和能量吸收也随着孔面积的增加而降低。因此，提出了最佳配置以实现结构参数的最小减少和柱力的最大减少。除了，提出了新的关系来计算穿孔 SPSW 的结构参数。所提出的关系与有限元结果显示出良好的一致性。