摘要
为预防冷弯薄壁Z型钢檩条畸变屈曲的发生,采用有限元软件ABAQUS分别对承受跨中和三分点处集中荷载的简支Z型钢檩条进行防畸变屈曲研究,对比分析了四种形式的隔板对四种卷边角度的Z型钢檩条的加固效果和经济性。结果表明,仅在檩条的受压部分布置隔板材料的隔板d最有效,在设计的四种隔板加固形式中,隔板形式d的单位用钢量对屈曲荷载提升最大,且防畸变屈曲加固效果不弱于其他三种隔板形式,从经济性上应优先考虑。
In order to prevent distortional buckling of cold-formed thin-walled steel purlins of the Z-section,the finite element software ABAQUS was used to study the distortional buckling resistance of simply supported Z-shaped purlins under the concentrated loads at the midspan or the 1/3 and 2/3 span of the purlins.The reinforced effects of four types of baffles for preventing distortional buckling of four rolled angles Z-shaped purlins are analyzed and compared.The results shows that the partition d is the most effective way,which just places the partition on the pressurized part of the purlin.Among the four types of designed partition reinforcement,the unit steel of the partition d can bear the most buckling load,and the reinforcement effect is not weaker than the other three types of partitions.It should be given priority in terms of its economy.
作者
孙琪
惠颖
SUN Qi;XI Ying(Department of Civil Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《低温建筑技术》
2020年第1期72-75,共4页
Low Temperature Architecture Technology
关键词
ABAQUS
Z型钢
集中荷载
畸变屈曲
加固
ABAQUS
Z-shaped purlines
concentrated loads
distortional buckling
reinforcement
