利用轴心受压构件曲线的最小二乘法拟合公式，根据轴心受压构件的整体稳定条件，导出轴心受压焊接组合工字形钢构件长细比λ的简化计算公式；进而总结出一种轴心受压钢构件的简化设计方法。利用该方法可直接计算适用长细比λ，确定截面尺寸，可一次性完成，步骤简洁，适用性强，具有一定的实用性，可供广大设计人员参考。 Based on the least-square fitting formula of the curve of the axial compression member, a simplified calculation formula of the slenderness ratio λ of the axial compression welded combination H-shaped steel member is deduced according to the overall stability of the axial compression member. Simplified Design Method of Axially Compressed Steel Members. The method can be directly applied to calculate the slenderness ratio λ, determine the cross-sectional size, can be completed at one time, the steps are simple, applicability, and has some practicality, for the majority of designers reference.