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.
分析结果表明，厚板焊接工形截面残余应力的大小及分布，除了与焊接输入热量有关外，尚与截面几何尺寸有关。
The studying results indicate that the magnitude and distribution of residual stress are related to the heat input created by welding process and to the cross section geometry.
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