【摘要】 为研究轴心受压组合T形短柱力学性能,运用有限元软件ABAQU S建立有限元模型,考虑钢管厚度、混凝土强度和钢材强度等级以及肢厚的影响,对轴心受压钢管混凝土组合T形短柱的荷载-变形关系曲线进行模拟分析,并比较分析组合T形柱与普通T形柱的承载力与破坏形态。结果表明,组合T形柱极限承载力与钢材面积及屈服强度、混凝土面积及圆柱体抗压强度成正比;组合T形短柱的承载力比普通T形短柱的高,达到极限承载力时的变形更大,延性更好。更多还原

【Abstract】 In order to study the mechanical properties of concrete-filled steel tubular composite T-section short columns subjected to axial compression,the finite element analysis software ABAQUS was used to establish the finite element models and the influence factors of steel tube thickness,strength of concrete and steel,flange thickness were considered,sequentially,the load-deformation relationship curves were simulated and the ultimate bearing capability as well as the failure modes were compared.The analytical results show that the ultimate bearing capability of composite T-section columns is proportional to the area and the yield strength of steel as well as the area and cylinder strength of concrete; compared with ordinary T-section columns,composite T-section columns have higher ultimate bearing capability,larger deformation and better ductility.更多还原