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New Proposals for the Direct Strength Method of Design of Cold-formed Steel Beams with Holes in Shear

机译:剪力孔冷弯型钢梁直接强度法设计的新方案

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In the latest North American Specification for the design of cold-formed steel structural members AISI S100-16, an empirical approach is specified to design beams with web holes in shear. Recently, a Direct Strength Method (DSM) of design for shear for perforated beams with the aspect ratio (shear span / web depth) of 1.0 has been proposed. This paper presents a comprehensive review of the proposal and an experimental validation using a test series on beams with the aspect ratio of 2.0 and with various square and circular web opening sizes conducted at the University of Sydney, and other experimental data collected from the literature. As a result, it is proven that the earlier proposal reliably predicts the shear strength of perforated structures with centrally located square and circular web holes and with an aspect ratio up to 2.0.
机译:在北美最新的冷弯型钢结构构件设计规范AISI S100-16中,指定了一种经验方法来设计带有腹板孔的剪力梁。近来,已经提出了一种设计的纵横比(剪切跨度/腹板深度)为1.0的多孔梁剪力的直接强度方法(DSM)。本文对提案进行了全面的审查,并使用了在悉尼大学进行的高宽比为2.0且具有各种方形和圆形腹板开口尺寸的梁的测试系列的实验验证,以及从文献中收集的其他实验数据。结果,证明了较早的提议可靠地预测了具有位于中心的正方形和圆形腹板孔且纵横比最大为2.0的穿孔结构的抗剪强度。

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