建筑钢结构进展2018，Vol.20Issue(1)：73-81,9.DOI:10.13969/j.cnki.cn31-1893.2018.01.009
锈蚀圆钢管混凝土短柱轴压承载力研究
Research on the Bearing Capacity of Corroded Circular Concrete Filled Steel Tubular Short Columns
摘要
Abstract
This paper presents a finite element (FE) model for calculating the bearing capacity of corroded circular concrete filled steel tubular short column by simulating acid rain solution.To simulate the corrosion of outer steel tube,the effect of corrosion on the elastic modulus and yield strength of steel are included in the constitutive equations of steel and concrete.The FE model is verified using the test results.Then the FE model is used to perform full-range analysis of corroded circular CFST column.The load-axial deformation behavior of circular CFST columns,the outer steel tube and the core concrete under different corrosion levels are analyzed.The confining stress-deformation process under different corrosion levels is also discussed.Based on the parametric analysis,the impact of parameters such as the ratio of sectional steel to concrete,steel yield strength,concrete strength and corrosion level on the mechanical performance of corroded CFST columns are evaluated.A simplified model for the corroded circular CFST columns by simulating acid rain is recommended.关键词
ABAQUS/酸雨/圆钢管混凝土/锈蚀率/极限承载力Key words
ABAQUS/acid rain/circular CFST/corrosion level/ultimate strength分类
建筑与水利引用本文复制引用
陈梦成,林博洋,黄宏..锈蚀圆钢管混凝土短柱轴压承载力研究[J].建筑钢结构进展,2018,20(1):73-81,9.基金项目
国家自然科学基金(51378206、51468017),江西省自然科学基金(20143ACB20008) （51378206、51468017）
