摘要
用有限元分析软件ANSYS建立有效的"壳—弹簧—壳"的模型,分别模拟5根相同截面、相同长细比、沿柱纵向粘贴不同层数CFRP布的圆管长柱,建立的有限元模型与试验结果进行对比验证了有限元模型的有效性。分析二次受力时的加固后极限承载力,并得出考虑二次受力作用下CFRP加固的空心圆管细长柱的轴压性能与不考虑二次受力时的差异,并据此提出相应的加固施工建议。
The ＂Shell-combine-shell＂ finite element model was used to research the reinforced slender circular tubular steel braces strengthened with CFRP. 5 specimens with same size but strengthened by different layers of longitudinal CFRP are simulated and its results showed in good agreement with experimental results. 10 more specimens are simulated by ANSYS to find the difference of axial - loading bearing capacity considering the effect of secondary load. And some suggestions are put forward for construction desizn according to the finite analysis results.
出处
《安徽建筑大学学报》
2015年第4期7-10,共4页
Journal of Anhui Jianzhu University
关键词
二次受力
CFRP
加固
圆钢管柱
轴压
承载力
有限元
secondary load
CFRP
strengthened
slender circular tubular steel brace
axial -loading
buckling strength
finite
