Numerical Analysis of Axial Compression Performance of Concrete Filled Double Steel Tube Short Columns

[摘要] For the purpose of obtaining the axial compressive performance of the concrete filled double steel tube (CFDST) short columns, four CFDST specimens were designed in this paper. Based on a simplified bilinear constitutive model for steel and a nonlinear constitutive model considering the hoop effect for concrete, and four short columns under axial compression were established by ABAQUS finite element (FE) software which can obtain the load-displacement curves and destructive forms, by compared with the existed experimental data the rationality of finite element model is verified. These can lay the foundation for further analysis of the extended parameters and seismic performance for composite columns.

[发布机构] Department of Architectural Engineering, Qiqihar Institute of Engineering, Qiqihar, Heilongjiang; 161005, China^1;School of Civil and Architecture Engineering, Northeast Petroleum University, Daqing, Heilongjiang; 163318, China^2

[效力级别] 无线电电子学

[关键词] Composite column;Compression performance;Compressive performance;Concrete-filled;Load-displacement curve;Nonlinear constitutive model;Seismic Performance;Short column