When temperature increases, deformation will develop under post buckling conditions, and it is difficult to describe axial force with analytic method, so numerical method is used.
When temperature increases, deformation will develop under post buckling conditions, and it is difficult to describe axial force with analytic method, so numerical method is used.
以此为基础，分析管柱升温时的轴向力和变形，确立计算步骤和边界点的处理方法。