Experimental study on overall buckling behavior of Q420 high strength welded galvanized tubes under axial compression

Abstract:

To investigate the overall buckling behavior of Q420 high strength welded gavalized steel tubes, an axial compression column test was conducted, the buckling modes and ultimate strength were analyzed, and the buckling strength of the specimens were calculated, which were compared with the column curves in the Chinese code. It shows that the stability factor φ calculated from test results is much higher than that calculated according to the Chinese code. At the same time, the comparison of axial compressive test result between galvanized round tubes and the ungalvanized ones is introduced, and the results show that the hot galvanizing processing improves the bearing capacity.