Axial Compression Test and Numerical Analysis of Lattice Dendritic Columns in Suzhou Taiping Finance Building [苏州太平金融高层格构式树形柱轴压试验与数值分析]

作者：Wang J.; Wu A.; Yu X.; Zhou W.; Shen Q.

来源：Progress in Steel Building Structures, 2020, 22(6): 120-127.

DOI：10.13969/j.cnki.cn31-1893.2020.06.014

• Axial compression test
• Failure mode
• Lattice dendritic column
• Numerical analysis
• Structural strengthening measure

In order to understand the axial compression performance and failure mechanism of lattice dendritic columns in Suzhou Taiping Finance Building, axial compression tests was conducted on a reduced-scaled model.The results show that lattice dendritic column has a good mechanical performance.The failure mainly happened on the bend of branches.The numerical analysis model of lattice dendritic column specimen was built using ABAQUS software.The accuracy of FE model was validated based on the failure mode and load-displacement curve.Three structural strengthening measures, raising the cross slanting beam, adding longitudinal board and filling concrete, were proposed to enhance the bend of branches concerning the serious failure happened on the bend of branches.The strengthening effects of axial compression performance of lattice dendritic column obtained from three structural strengthening measures were compared using the FE model.The results show that adding box-section cross straining-beam on bend of branches can improve initial stiffness and ultimate bearing capacity of lattice dendritic column and mechanical performance.The structural strengthening measures can be widely used in actual engineering projects.

• 单位
  合肥工业大学