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研究了带有腹板加劲肋的帽形卷边槽钢截面的薄壁组合柱的屈曲性能。这些柱由具有对称铺设角的层合板构成。采用有限元法对柱的屈曲性能进行分析。通过分叉分析以获得屈曲荷载及柱的振型。采用荷载-挠度曲线分析对柱的后屈曲性能进行研究。结果表明:铺设角和几何参数对柱的屈曲和后屈曲性能影响显著。本文的研究结果有助于研究如何提高组合柱的承载能力。
The buckling behavior of thin-walled composite columns with hat-shaped channel sections with web stiffeners was studied. These columns consist of a laminate with symmetrical laying angles. The buckling behavior of the column was analyzed by finite element method. Bifurcation analysis was performed to obtain the buckling load and column modes. The post-buckling behavior of the column was investigated by load-deflection curve analysis. The results show that the laying angle and geometric parameters have significant influence on the buckling and post-buckling performance of the column. The results of this paper will help to study how to improve the bearing capacity of composite columns.