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侧边加劲波纹钢板墙弹性剪切屈曲分析

DOI: 10.13197/j.eeev.2015.03.199.weiy.025, PP. 199-209

Keywords: 波纹钢板墙,加劲肋,弹性屈曲,跨高比,波纹倾角

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Abstract:

结合两边连接及波纹钢板的优点,提出一种新型的侧边加劲波纹钢板墙。建立了侧边加劲波纹钢板墙的有限元精细化分析模型,采用有限元软件ANSYS对其进行抗剪屈曲分析,推导了波纹钢板墙的弹性抗剪屈曲强度。研究了墙板参数、波纹参数及加劲肋参数对屈曲模态和抗剪屈曲承载力的影响规律。研究结果表明,所提出的波纹钢板墙,其抗剪屈曲承载力较平钢板墙显著提高;在不同的参数下具有整体屈曲和局部屈曲两种不同的屈曲模态;其临界剪切屈曲应力值随跨高比的增加而大致保持不变,随高厚比的增大而逐渐减小,随波纹倾角及子板宽的增大皆先增大后减小。因此,实际工程应用中应合理选择波纹钢板墙参数,以避免发生局部屈曲而导致角部连接失效以及不稳定承载,从而使之具有较大的弹性屈曲承载力,更好地发挥钢材的强度和延性。

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