Evaluation method of plastic deformation capacity of a beam web considering the composite effect in a CFT column-H shaped beam connection

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The plastic deformation capacity of a beam is an important for seismic design. The plastic deformation capacity of a beam connected to the CFT column is greater than that of the beam connected to the hollow steel column by analysis. Experimental studies of square CFT column-H-shaped beam connection were carried out. It is shows that maximum strength was about the same and the influence of size of columns (plate thickness), infilled concrete an scallop for welding on the maximum strength was not observed.