中文摘要：

体外预应力自复位框架通过设置铰接节点弱化结构整体抗侧刚度，减小输入到结构中地震能量，地震作用后利用钢绞线的弹性回复力进行自复位。在已有的理论分析和试验研究基础上，对体外预应力自复位框架结构的抗震设计方法进行了研究。确定了体外预应力自复位框架结构的抗震性能水准、多道防线的布置以及抗震设计流程。以一个三层三跨体外预应力自复位框架为例进行了基于性能的抗震设计，采用有限元程序进行动力时程分析，输入3条地震波模拟结构经历设计烈度地震、罕遇地震的动力响应。分析结果表明：体外预应力自复位框架结构在罕遇地震作用下，最大层间位移角满足设计要求的性能目标，验证了基于性能抗震设计方法的有效性，同时表明体外预应力自复位框架结构具有良好的自复位能力和优异的抗震性能。

英文摘要：

The External Prestressing Self-centering Frame （EPSCF） weakens structural lateral-resisting stiffnessthrough its hinge joints and reduces the input earthquake energy. The strands in EPSCF structure provide elastic re- the structure after earthquake. Based on previous theoretical and experimental studies, ar EPSCF structure is proposed. The seismic performance level, the mutiple lines of defencePSCF structures are investigated. The performance-based seismic design of a 3-story 3-baystoring force to re-centerseismic design method foand the design flow of EEPSCF structure is carried out, the dynamic time-history analysis of finite elelment method isadopted to simulatethe earthquake responses under three earthquake waves with fortification intensity earthquake and rareearthquakerespectively. Research results indicated that the maximum value of inter-story drifts of the EPSCF structure underrare earthquake matches well with the designed performance criteria, the effectiveness of the performance-basedseismic design method of EPSCF is verified, and the EPSCF structure has great self-centering capacity and excellentseismic-resisting performance.