Seismic performance of Q690 high strength steel welded H-section columns

In order to further study the seismic performance of Q690 high strength steel (HSS) columns, a finite element (FE) model was built up by using general FE analysis software ABAQUS. H-section columns under horizontal cyclic loading were simulated. The influences of web width-to-thickness ratio, flange width-to-thickness ratio, column slenderness ratio and axial compression force ratio on the load-bearing capacity and deformation capacity were analyzed. The FE analysis result shows that the Q690 HSS H-section columns have a good seismic performance. And the simplified formulae of the load-bearing capacity and deformation ability of the Q690 H-section columns under the cyclic loading are obtained.