Cold-formed thin-walled steel sections are widely used as primary loadbearing members in lightweight panels that form walls in residential and other low rise structures. In cold regions, the webs of the steel sections are often perforated to reduce the cold bridging effect in order to increase thermal comfort and reduce energy waste. Perforating the web of a steel section will reduce its loadbearing capacity. This paper presents the results of an experimental and numerical study to investigate the compression behaviour of lightweight structural panels using perforated sections. The primary objective of the tests is to provide experimental data to validate the numerical simulations, which were carried out using the commercial finite element analysis software ABAQUS. The validated FE analysis was used to develop a simple design calculation method to convert a section with perforated web to a section with solid web. In the equivalent solid web, the thickness of the solid web would have the same elastic local buckling strength as the original perforated web with the gross thickness while the thickness of the unperforated flanges remains unchanged. By converting a thin-walled section with perforated web to a solid section with an effective web thickness, the conventional design methods for thin-walled structures can be applied.

中文翻译：

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使用多孔冷弯薄壁型材的轻质结构板在压缩状态下的结构性能和设计

冷弯薄壁型钢被广泛用作轻质板的主要承重构件，这些轻质板在住宅和其他低层建筑中形成墙体。在寒冷地区，钢型材的腹板通常会打孔以减少冷桥效应，以增加热舒适度并减少能源浪费。在钢型材的腹板上打孔会降低其承重能力。本文介绍了一项实验和数值研究的结果，以研究使用穿孔截面的轻质结构板的压缩行为。测试的主要目的是提供实验数据以验证数值模拟，该模拟是使用商业有限元分析软件ABAQUS进行的。经过验证的有限元分析用于开发一种简单的设计计算方法，以将带有穿孔纸幅的部分转换为带有实心纸幅的部分。在等效的实心腹板中，实心腹板的厚度将具有与具有总厚度的原始穿孔腹板相同的弹性局部屈曲强度，而未穿孔法兰的厚度保持不变。通过将带有穿孔腹板的薄壁部分转换为具有有效腹板厚度的实心部分，可以采用传统的薄壁结构设计方法。实心腹板的厚度将具有与总厚度的原始穿孔腹板相同的弹性局部屈曲强度，而未穿孔法兰的厚度保持不变。通过将带有穿孔腹板的薄壁部分转换为具有有效腹板厚度的实心部分，可以采用传统的薄壁结构设计方法。实心腹板的厚度将具有与总厚度的原始穿孔腹板相同的弹性局部屈曲强度，而未穿孔法兰的厚度保持不变。通过将带有穿孔腹板的薄壁部分转换为具有有效腹板厚度的实心部分，可以采用传统的薄壁结构设计方法。