【摘要】 采用三维虚拟层合单元法 ,对钢管混凝土和纯混凝土轴心受压构件在轴向荷载作用下产生的稳定承载能力和材料承载能力问题进行了分析比较 ,同时进一步分析了前者失稳破坏和材料破坏的界限值 ,模拟了前者第一阶失稳模态 ,结论与试验结果符合良好 .更多还原

【Abstract】 By using the three-dimensional virtual laminated element method, the stability and load bearing capacities of concrete-filled steel tube columns are analyzed and compared with the results of pure concrete columns. It is shown that the former structure is superior to the latter one in both stability and strength. The first modal of the structure is simulated. The calculating results agree well with the test ones.更多还原