WANG Weiyong,YANG Qibo,LI Xiang.Local Buckling Design Method of Welded Q960 Steel H‑section Column at Elevated Temperatures[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(01):183-191.
WANG Weiyong,YANG Qibo,LI Xiang.Local Buckling Design Method of Welded Q960 Steel H‑section Column at Elevated Temperatures[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(01):183-191. DOI: 10.13409/j.cnki.jdpme.20220524001.
Local Buckling Design Method of Welded Q960 Steel H‑section Column at Elevated Temperatures
In order to study the local stability of Q960 welded H-section axial compression columns, ABAQUS software package is employed to establish the finite element model. After verified by the experimental data, the effects of different parameters, such as flange width to thickness ratio, web height to thickness ratio, member temperature, member slenderness ratio, initial geometric imperfection and residual stress, on the local buckling ultimate strength of Q960 welded H-section axial compression columns are analyzed. The results show that the local buckling capacity of axially compressed columns is mainly related to the section dimension and member temperature. It is found that the design method of current codes is not suitable for estimating the local buckling capacity of welded Q960 steel H-section axial compression columns at high temperatures. According to test data and finite element analysis results, a local buckling design method for welded Q960 steel H-section axial compression columns is proposed. The comparison with experimental data and finite element analysis results shows that the proposed method can accurately calculate the local buckling capacity of welded Q960 steel H-section axial compression columns at different temperatures.
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