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为研究复杂卷边槽钢轴压固支构件的稳定性能,选取不同的翼缘宽厚比、截面形式、构件长度、卷边长度等几何参数,对共计292个构件进行非线性有限元分析,研究上述参数对复杂卷边槽钢固支构件稳定性能的影响。结果表明:固支构件较易发生畸变屈曲,翼缘宽厚比较大时,构件的整体失稳模式多为弯扭屈曲。构件的极限承载力随着翼缘宽厚比、构件长细比的增大而减小,卷边对构件承载效率的影响随翼缘宽厚比的不同而呈现两种不同的规律。
In order to study the stability of the compacted buttressed channel members with complex hemispherical channels, a total of 292 members were selected for nonlinear finite element analysis by geometric parameters such as aspect ratio, section form, component length and curl length. The influence of the above parameters on the stability of the complicated crimping channel retaining members. The results show that the buckling deformation is more likely to occur in the fixed members, and when the flange width and thickness are large, the overall instability modes of the members are mostly flexural and torsional buckling. The ultimate bearing capacity of the members decreases with the increase of the slenderness ratio and the slenderness ratio of the flanges. The influence of curling on the bearing efficiency of the members presents two different laws depending on the aspect ratio of the flanges.