中文摘要：

异形柱梁柱节点是结构的薄弱部位,为了改善异形柱梁柱节点薄弱部位的受力性能,采用配置600 MPa级高强钢筋和X形筋两种改善异形柱梁柱节点受力性能的方法。设计了4个异形柱梁柱节点组合体试件并对其进行拟静力加载试验,研究分析节点的破坏特征、滞回特性、骨架曲线、承载力、延性及钢筋应变等性能指标,揭示配置600 MPa级钢筋节点的抗震性能及配置X形筋对节点抗震性能的影响规律。研究结果表明：配置600 MPa级钢筋的节点具有较高的承载力,相比于配置500 MPa级钢筋的节点延性稍差;配置X形筋可明显改善节点的破坏特征,并可提高节点的承载力、延性及耗能能力,改善节点的抗震性能。

英文摘要：

The joints with specially shaped columns are weak parts of the reinforced concrete structures with specially shaped columns. In order to improve their mechanical performance,600 MPa steel bars and X-shaped reinforcement to the weak part of joints with specially shaped columns were proposed and investigated. Four joints with specially shaped columns were designed and the pseudo-static tests were then carried out. Such performance as failure characteristic,hysteresis characteristic,skeleton curves,bearing capacity and ductility,strain of steel bars,the applicability of 600 MPa rebars and X-shaped reinforcement on the seismic performance of the joints were analyzed.The results showed that joints with 600 MPa rebars had higher bearing capacity,while ductility was reduced slightly as compared to the joints with 500 MPa rebars; the setting of X-shaped reinforcement in the joints region could significantly improve the damage characteristics of the joints with specially-shaped columns,and enhance the bearing capacity,ductility and energy dissipation capacity,as well as improve the aseismic behavior.