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工程力学  2012 

U肋加劲板焊接残余应力的一种简化计算方法

DOI: 10.6052/j.issn.1000-4750.2010.12.0936, PP. 170-176

Keywords: 钢桥,焊接残余应力,简化计算方法,U,肋加劲板,有限元方法

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Abstract:

基于焊接残余应力数值模拟方法,分析了U肋加劲板各组成板件的板宽、板厚对焊接残余应力分布的影响,揭示了U肋与母板残余应力合力的分配规律,提出了针对不同构造尺寸的U肋加劲板焊接残余应力分布简化计算方法。研究结果表明:各组成板件的板宽变化对焊接残余拉应力的分布影响较小,但对焊接残余压应力的大小影响较大;U肋与母板的板厚比对U肋与母板残余应力的分配比例影响较大。U肋加劲板受压承载力计算时,焊接残余应力分布可以采用简化方法计算,其结果与根据数值模拟得到的焊接残余应力分布计算的结果基本一致。

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