摘要
全面梳理了轴压杆弯扭屈曲的理论分析过程和工程应用方法。只有一个对称轴或无对称轴的截面,可能出现弯扭屈曲;当为双轴对称截面时,可能发生扭转屈曲;这时临界荷载可能小于通常的弯曲屈曲的欧拉临界荷载。根据弹性弯扭屈曲理论,GB 50017—2017《钢结构设计标准》给出了扭转屈曲和弯扭屈曲的设计公式。
In the paper theoretical analysis and design method of buckling of centrally loaded members by torsion and flexure are introduced.Torsion and flexure buckling may occur for sections with one symmetrical axis or without any symmetrical axis.Torsion buckling may occur for sections with two symmetrical axes.For both situations critical loads will less than Euler’s critical load.According to elastic buckling theory design formula of torsion buckling and torsion and flexure buckling are provided in Standard for Design of Steel Structures(GB 50017—2017).
作者
王立军
Lijun Wang(Huachengboyuan Engineering Technology Group,Beijing 100052,China)
出处
《钢结构（中英文）》
2020年第3期37-64,共28页
Steel Construction（Chinese & English）
关键词
双轴对称截面
单轴对称截面
扭转屈曲
弯扭屈曲
sections with two symmetrical axes
sections with one symmetrical axis
torsion buckling
torsion and flexure buckling
