中文摘要：

在高强箍筋约束混凝土轴心受压试验研究的基础上，对高强箍筋约束混凝土进行了三维非线性有限元分析，与试验结果比较吻合较好；通过数值模拟分析了箍筋间距、箍筋强度及箍筋形式等对约束混凝土轴压性能的影响，分析了箍筋受力与混凝土截面应力分布，揭示了箍筋与混凝土在轴压下的相互作用，探讨了箍筋对混凝土的约束机理；结果表明，通过合理选择有限元分析模型，可较好地预测箍筋约束混凝土柱的轴心受压性能。

英文摘要：

Based on the concentric loading test of 31 high-strength concrete columns confined by high-strength lateral ties, three-dimensional finite element analysis of concrete columns confined by high-strength lateral ties are presented in this paper,whose results show good correlation with the experiment. The influences of the tie yield strength, tie spacing and. tie configuration on the characteristics of confined concrete are evaluated; the stress of lateral ties and the stress distribution of concrete cross-section analyzed; the interaction between lateral ties and concrete disclosed; and the lateral ties confinement mechanism discussed based on the numerical results. The results indicate that using the proper analysis model can well predict the behavior of axially loaded concrete confined by lateral ties.