Study on Axial Compression Stability of Q345 Large-Section Angle Steel Columns

With the growing demand for bearing capacity of columns, large-section angle steel (LAS) columns have been widely adopted. Q345 is most commonly used steel, but research on axial compression stability LAS mainly focuses steels with 420 MPa and above. In order to study buckling behavior a total 96 specimens are subjected tests. The test results compared specification analyzed. Based data, an accurate finite element model column established, parametric analysis carried out through model. show that mode flexural buckling, local not observed. coefficient short significantly higher than result specification. reasons come from constitutive mode, influence section size can be ignored. curve in GB50017-2017 Eurocode 3 calculate columns. Finally, new proposed