焊接工字形鋼軸壓構(gòu)件截面設(shè)計的直接算法
段樹鑫
- 摘 要
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段樹鑫
(河北省冶金設(shè)計研究院 石家莊 050021)[提要] 通過對工字形截面參數(shù)h/b，b/t，tw/t 的合理選擇，導(dǎo)出截面特性的簡化表達式，從而將軸心受壓構(gòu)件穩(wěn)定性的計算公式轉(zhuǎn)換為長細比 λx（或 λy ）的方程式，利用解出的λx（ λy ）直接計算出經(jīng)濟合理的截面尺寸。該方法克服了試算法的缺點，避免了反復(fù)驗算。
[關(guān)鍵詞] 軸壓構(gòu)件 工字形截面 整體穩(wěn)定 局部穩(wěn)定 截面設(shè)計 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
