横向荷载对乳包冷弯钢柱局部屈曲的影响

IF 1.1 4区材料科学 Q3 Engineering

Materials Science-Poland Pub Date : 2023-01-03 DOI:10.5755/j02.ms.31876

Rajivgandhi Narasimhan, J. H. Henderson

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引用次数: 0

摘要

本文报道了冷弯型钢无缠绕和胶乳缠绕柱的试验研究。各柱截面承受反复的横向荷载直至破坏。所有柱均发生局部屈曲破坏。柱的横截面尺寸、内外唇的设置、柱的胶乳包覆等因素对柱的侧向荷载影响较大。将柱截面腹板长度从100 mm增加到200 mm，可使柱的承载能力提高70% ~ 100%。局部屈曲是在柱的法兰部分开始的。无凸缘和内凸缘的柱截面均出现向内屈曲。外唇柱呈现向外屈曲。唇形和乳胶包层的设置对柱的初始荷载-位移行为没有影响。然而，它增加了截面的承载能力。计算了柱的吸能系数和延性系数，得到了胶乳包覆对这些参数的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of Lateral Load on Local Buckling of Latex Wrapped Cold Formed Steel Columns

This paper reports the experimental investigation conducted on unwrapped and latex wrapped cold-formed steel column. Various column cross-sections are subjected to repeated lateral loading till failure. All the columns were observed to fail in local buckling. The column cross-section dimension, provision of interior and exterior lip, and the latex wrapping of the columns influenced the lateral load to failure. Increasing the web length of a column section from 100 to 200 mm increased the load-carrying capacity of the column by 70 to 100 %. The local buckling was initiated in the flange portion of the column. The column section with no lip and interior lip exhibited inward buckling of the flange. The column with exterior lip exhibited outward buckling. The provision of lip and latex wrapping did not influence the initial load-displacement behavior of the columns. However, it increased the load-carrying capacity of the sections. Energy absorption index and ductility factor were calculated and the effect of latex wrapping of the columns on these parameters was evident.

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来源期刊

Materials Science-Poland 工程技术-材料科学：综合

CiteScore

1.70

自引率

18.20%

发文量

审稿时长

6.2 months

期刊介绍： Material Sciences-Poland is an interdisciplinary journal devoted to experimental research into results on the relationships between structure, processing, properties, technology, and uses of materials. Original research articles and review can be only submitted.