摘要
采用不同的解析方法对钢管混凝土柱进行轴向及弯矩载荷计算,并借助ABAQUS有限元软件分析了方形、圆形、六边形截面的钢管混凝土在偏心载荷作用下的荷载-位移关系和应力分布情况。结果表明,圆形截面钢管混凝土承载力最大,可承载1 800kN;六边形截面钢管混凝土应力集中部位分散,具有较优良的综合性能,能显著降低应力集中。解析方法计算结果与有限元模拟结果符合,因此,轴向偏心载荷模型可为钢管混凝土结构的设计及校核提供参考。
The axial and moment loads of concrete-filled steel tubular columns were calculated by different analytical methods,and the load-displacement relation and stress distribution of concrete-filled steel tube with hexahedral,square and circular loading section were analyzed by means of ABAQUS finite element software.The results show that the bearing capacity of concrete-filled steel tube with circular section is the largest of 1 800 kN.The stress concentration of concrete filled steel tube with hexagonal section is dispersed with a better comprehensive performance,which can reduce significantly the risk of material failure caused by stress concentration.The analytical results are in agreement with the finite element simulated ones,so that the axial eccentric load model can be provided for a reference for the design and verification of concrete-filled steel tubular structures.
作者
刘晓庆
李君君
Liu Xiaoqing1, Li Junjun2(1.Sifang College, Shijiazhuang Tiedao University; 2.Shijiazhuang Institute of Railway Technolog)
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2018年第10期1068-1071,共4页
Special Casting & Nonferrous Alloys
基金
河北省科技厅重点研发计划自筹课题资助项目(17275509)
关键词
有限元分析
钢管混凝土
应力分布
校核模型
Finite Element Analysis
Concrete-filled Steel Tube
Stress Distribution
Verification Model
