本文根据热弹塑性应力理论，用有限元法分析了厚板焊接工形截面柱的残余应力。
Using the theory of thermal elastic-plastic stress, this paper calculates the residual stress distribution in the heavy welded I-section by finite element method.
计算结果还表明，残余应力的变化对超高强度钢材焊接工形截面轴心受压柱整体稳定承载力的影响较小。
The FEA also indicated that the residual stress only has little effect on the overall buckling resistance of the ultrahigh strength steel columns.
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