Cracks in High-Strength Concrete Columns with Ring Welded Stirrups

The experiment of the six energy-saving light-steel concrete composite structures is carried out under the low cyclic loading,to analyze the ductility,energy dissipation,load carrying capacity and crack.The main results show: on condition of constant axial compression ratio,the ductility of high-strength reinforced concrete columns increases with increasing the stirrup characteristic value;on condition of constant stirrup characteristic value,the ductility decreases with increasing constant axial compression ratio;the influence of axial compression ratio on the ductility is greater than that of stirrup.Ring welded stirrup with high strength can improve the ductility of column with high strength concrete.Especially for the higher axial compression ratio,the role of stirrups is more obvious.