【摘要】 针对异形柱节点的薄弱特性,通过在节点处掺加钢纤维,对比了钢纤维增强的异形柱中节点和未掺加钢纤维的普通混凝土异形柱中节点的破坏特征、承载力、延性、滞回性能和刚度退化等抗震性能指标。结果表明:钢纤维增强的异形柱节点试件承载力明显提高,节点核心区破坏程度明显较轻,加载后期,刚度保持效果有明显改善,说明钢纤维可以提高异形柱节点的抗震能力。更多还原

【Abstract】 In view of the weakness of special-shaped columns node,steel fiber was added in the node.The seismic performance indices,such as failure characteristics,bearing capacity,ductility,hysteretic performance and rigidity degeneration of the node with steel fiber was compred to that without steel fiber.The results indicate that steel fiber-reinforced special-shaped columns node can obviously improve the bearing capacity,node specimens core failure is obviously lighter and the effect of stifiness maintenance is obviously improved i.e.steel fiber can improve the seismic resistance of special-shaped columns node.更多还原