高强箍筋约束混凝土柱有限元分析

In order to investigate the mechanical property of concrete confined with high-strength stirrups intensively, the behavior of concrete columns confined with high-strength stirrups under pure compression were simulated through nonlinear finite element method. The simulated results show that numerical model could represent the mechanical character of specimens, higher stirrups stress appears in the middle cross section of specimens, the high-stregth stirrups shows persistent confined effect even at ultimate stress of specimens, the stirrups stress is increasing with the growth of volume ratio of stirrups and decreasing with the rising of concrete strength