中文摘要：

为了研究双层高强螺旋箍筋约束混凝土短柱在轴压作用下的强度和延性，在国内外学者对约束混凝土研究的基础上，分析其应力－应变曲线和破坏形态，进而探讨箍筋形式和配箍特征值（综合影响因素）对双层高强螺旋箍筋约束混凝土短柱强度和延性性能的影响。研究结果表明：模拟与试验结果吻合较好，增大双层高强螺旋箍筋约束混凝土试件的配箍特征值对提高钢筋混凝土圆柱的极限承载力和延性有明显效果，结果偏于安全。

英文摘要：

High-strength stirrup （cold drawn high-strength steel wire） has been developed ,but there is only a few studies on the strength and ductility of double-layered high-strength spiral stirrup confined concrete circular columns at home and abroad .In order to study the strength and ductility of double-layered high-strength spiral stirrup confined concrete circu-lar columns under eccentric load ,based on domestic and oversea studies on confined concrete ,the stress-strain curves and failure patterns were analyzed .Then the influence of stirrup forms and transverse reinforcement characteristic values on the strength and ductility of double-layered high-strength spiral stirrup confined concrete circular columns were dis-cussed based on the analysis .The results indicate that the simulation results are in good agreement with the test results . The effective constraints have significant effect on improving the ultimate bearing capacity and ductility of reinforced con-crete columns and the results indicate that the values are within the safety range .