不同规范角钢构件轴压承载力计算方法比较

Comparison of Different Specifications on the Calculation Method of Axial Bearing Capacity for Angel Steel

本文对国内外常用规范角钢构件的承载能力计算方法及其理论来源进行介绍,并结合计算实例对各规范的柱子曲线和设计值进行对比。结果表明,各规范柱子曲线相差较大,最大达到20%;当长细比较大时,ASCE/SEI 10-15《输电线路格构式钢结构设计》用欧拉临界荷载作为角钢构件轴压承载力设计值,偏于冒进。

This paper introduces the calculation method and its source of angle steel axial bearing capacity in codes commonly used at home and abroad.The column curves and design bearing capacities of different specifications were compared in this paper with calculation examples.It shows that the column curves of different standards have a great difference which can be up to 20%.When the slenderness is relatively large,ASCE/SEI 10-15 uses the Euler critical load as the design value of axial bearing capacity for angle steel,which is aggressive.