【作者】 亢二聪； 谢剑；

【Author】 KANG Er-cong;XIE Jian;Department of Civil Engineering,Tianjin University;Key Laboratory of Coast Civil Structure Safety of China Ministry of Education,Tianjin University;

【机构】 天津大学建筑工程学院土木工程系； 天津大学滨海土木工程结构与安全教育部重点实验室；

【摘要】 为研究不同连接方式的装配式板柱节点在不平衡弯矩作用下的抗震性能,进行了3个板柱节点(试件JD-1、JD-2和JD-3分别为:有粘结预应力连接、无粘结预应力连接和哈芬预埋件连接)的拟静力实验,分析了节点的破坏过程、破坏状态及耗能能力等。试验结果表明:在水平地震作用下,3个试件均发生弯曲破坏;预应力筋对承载力的贡献并不明显;随着层间位移角的增大,试件刚度迅速退化,有粘结预应力连接节点刚度略强于其余两种节点;哈芬预埋件连接节点延性最好;采用无粘结预应力连接时,预应力筋始终处于受拉状态,卸载后残余变形最小,耗能能力最差。更多还原

【Abstract】 Failure modes and the influence on seismic performance were researched based on three interior slab-column connections. The connection types of specimens JD-1, JD-2 and JD-3 were bonded prestressed, unbonded prestressed and HALFEN HLB loop box, respectively. Test results show that under lateral seismic load, failure mode of three specimens is flexural failure. It’s not obvious that prestressing force can significantly improve the flexural bearing capacity. With the increase of the displacement, the stiffness degenerated quickly. While JD-1 possesses better stiffness than others, JD-3 acts better on ductility. Besides, the energy-dissipating ability of JD-2 was worst because prestressed tendons were still in tension.更多还原