建筑钢结构进展2026，Vol.28Issue(1)：119-127,9.DOI:10.13969/j.jzgjgjz.20240801003
不锈钢筋-圆不锈钢管海砂混凝土构件受弯性能研究
Bending Performance of Stainless Steel Bars-Sea Sand Concrete Filled Circular Stainless Steel Tubular Members
摘要
Abstract
In this paper,a finite element(FE)analysis model was developed to investigate the flexural behavior of stainless steel bars-sea sand concrete filled circular stainless steel tubular specimen.Based on the FE model,the stress mechanism under pure bending was investigated.The influences of concrete strength,steel tubular yield strength,yield strength of the longitudinal bars,steel ratio of the steel tube,and longitudinal bar ratio on the bending performance of the composite member were investigated.The results highlight the significant enhancement in flexural bearing capacity due to embedded longitudinal bars.Additionally,the flexural bearing capacity of the composite column increased with higher concrete strength,steel tubular yield strength,yield strength of the longitudinal bars,steel ratio of the steel tube,and longitudinal bar ratio.Moreover,the composite bending stiffness increased with higher concrete strength,steel ratio of the steel tube,and longitudinal bar ratio,while decreased with higher yield strength of the steel tube or longitudinal bars.The study also identified that current calculation methods overestimated the flexural stiffness but underestimated the flexural resistance of such members.Through 60 FE examples,simplified models for estimating the bending resistance and composite bending stiffness of such members were regressed.The simplified calculation results show good agreement with the FE predictions.关键词
不锈钢筋/不锈钢管海砂混凝土/受弯性能/有限元分析/抗弯刚度/抗弯承载力/简化计算公式Key words
stainless steel bar/sea sand concrete filled stainless steel tube/bending performance/finite element analysis/bending stiffness/flexural bearing capacity/simplified calculation formula分类
建筑与水利引用本文复制引用
李德山,王志滨,林继烃,李玉甫,陈文灿..不锈钢筋-圆不锈钢管海砂混凝土构件受弯性能研究[J].建筑钢结构进展,2026,28(1):119-127,9.基金项目
广东省普通高校特色创新类项目(2022KTSCX246),广东建设职业技术学院校级科研项目(KY2023-08),泉州市科技计划项目(2021C015R) （2022KTSCX246）
