焊接工字形钢轴压构件截面设计的直接算法
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段树鑫
(河北省冶金设计研究院 石家庄 050021)[提要] 通过对工字形截面参数h/b，b/t，tw/t 的合理选择，导出截面特性的简化表达式，从而将轴心受压构件稳定性的计算公式转换为长细比 λx（或 λy ）的方程式，利用解出的λx（ λy ）直接计算出经济合理的截面尺寸。该方法克服了试算法的缺点，避免了反复验算。
[关键词] 轴压构件 工字形截面 整体稳定 局部稳定 截面设计 直接算法The simplified formula of H-shaped section characteristic is presented based on the rational selection of the parameters: h/b, b/t, tw/t. The stability formula of axial-compressed members has been changed to the equation of slender λx( or λy ). The economical and rational section sizes can be directly calculated with λx( or λy ).Keywords: axial-compressed member; H-shaped section; integrity stability; local stability; section design
