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（中鋼集團(tuán)工程設(shè)計(jì)研究院有限公司，石家莊050020）

［摘要］通過合理選擇箱形截面的參數(shù)比值（h/b，h/t_w，b/t），導(dǎo)出截面特性的簡化表達(dá)式，進(jìn)而由軸心受壓構(gòu)件的穩(wěn)定條件導(dǎo)出構(gòu)件長細(xì)比λx的方程式，再利用λ_x方程的解計(jì)算出滿足穩(wěn)定性要求的截面尺寸，克服了試算法的缺點(diǎn)，計(jì)算簡捷，經(jīng)濟(jì)合理。

［關(guān)鍵詞］軸壓構(gòu)件；箱形截面；整體穩(wěn)定；局部穩(wěn)定；控比算法

中圖分類號(hào)：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)02-0059-06

Ratio-control arithmetic of welded box-section design on axial compression members

Duan Shuxin

（Sinosteel Engineering Design & Research Institute Co., Ltd., Shijiazhuang 050020, China）

Abstract:Through the reasonable choice of parameter ratio about box-section, the simplified expression of section characteristic was deduced. The slenderness ratio λ_x equation was deduced according to the stabilization condition of axial compression members. Then the solution of the λ_x equation was used to calculate the section dimension to satisfy the stabilization demand. The disadvantage of trial algorithm is conquered and it is simple, economic and reasonable.

Keywords:axial compression member; box-section; whole stabilization; local stabilization; ratio-control arithmetic

參考文獻(xiàn)

［1］GB50017—2003鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國計(jì)劃出版社，2003.