高强铝合金混凝土组合柱轴压性能研究  

Research on Axial Compression Behavior of High-strength Aluminum Concrete Composite Columns

作　　者：翟旭 Zhai Xu(Anhui Construction Engineer Group,Hefei 230000,China)

机构地区：[1]安徽建工集团股份有限公司,合肥230000

出　　处：《特种结构》2025年第2期59-64,共6页Special Structures

摘　　要：为研究高强铝合金管混凝土组合柱在轴心受压条件下的承载力性能,本文开展了6根铝合金圆管组合柱(CFAT)的轴压试验,并且利用有限元软件ABAQUS进行数值分析。所有CFAT试件均由高强铝合金和内填混凝土制作而成。试验结果表明所有试件的破坏形式均为跨中部位横向位移较大而导致的整体屈曲失稳破坏,同时在加载期间铝合金外管表面未出现局部屈曲,试件整体也未发生强度破坏,组合构件具有较高的承载力和延性。随后基于有限元模型进行参数化分析,讨论了长细比和内填混凝土强度对试件极限承载力的影响。To research the axial bearing capacity performance of concrete filled high-strength aluminum alloy tubular(CFAT)columns,6 CFAT specimens were tested under axial load,and the finite element models were developed for numerical analysis using finite element software ABAQUS.The column specimens were fabricated by high-strength aluminum alloys and filled with concrete.The experimental results revealed that all the specimens failed due to overall buckling instability caused by large transverse displacements at the mid span.At the same time,there was no local buckling on the surface of the aluminum alloy tube during loading test,and the specimens did not experience strength failure.The specimens showed excellent bearing capacity and ductility.A parametric analysis was subsequently conducted based on the validated finite element model to discuss the impacts of slenderness ratio and infilled concrete strength on the ultimate bearing capacity of the composite columns.

关 键 词：组合柱 轴心受压 非线性分析 极限承载力 

分 类 号：TU398.9[建筑科学—结构工程]