【摘要】 以某超高层巨型框架结构巨型柱为原型,进行了3个多腔钢管混凝土巨型柱模型试件的轴压性能试验研究,模型按1/12缩尺。3个试件的几何尺寸和腔体钢板均一致,各试件主要参数:试件1腔内加设钢筋笼,混凝土强度等级为C30;试件2腔内不加设钢筋笼,混凝土强度等级为C40;试件3腔内加设钢筋笼,混凝土强度等级为C40。试验分析了各试件的承载力、刚度及退化过程、残余变形、破坏特征等。研究表明:腔内设置钢筋笼的多腔钢管混凝土巨型柱具有良好的延性和抗压工作性能,可用于工程设计。更多还原

【Abstract】 According to a mega-column from a super high-rise mega-frame structure,three 1/12 scaled multicell CFST mega-column models were tested under axial compression.All the geometric dimensions and the steel plates of the three specimens were same with eachother.Specimen 1 was made from concrete C30 with steel reinforcement cage inside;specimen 2 was made from concrete C40 without steel reinforcement cage; specimen 3 was made from concrete C40 with steel reinforcement cage inside.The load-bearing capacity,stiffness and its degeneration,residual deformation and failure characteristic of models have been compared and analyzed.The study shows that the multi-cell CFST mega-column with steel reinforcement cage inside has good ductility and good compression work performance.And it can be used in the design practical of engineering.更多还原