（中钢集团工程设计研究院有限公司，石家庄050020）

［摘要］通过合理选择箱形截面的参数比值（h/b，h/t_w，b/t），导出截面特性的简化表达式，进而由轴心受压构件的稳定条件导出构件长细比λx的方程式，再利用λ_x方程的解计算出满足稳定性要求的截面尺寸，克服了试算法的缺点，计算简捷，经济合理。

［关键词］轴压构件；箱形截面；整体稳定；局部稳定；控比算法

中图分类号：TU391文献标识码：A文章编号：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

参考文献

［1］GB50017—2003钢结构设计规范［S］.北京：中国计划出版社，2003.