【作者】 鲁亮； 谭玉生； 胡宇飞；

【Author】 LU Liang;TAN Yu-sheng;HU Yu-fei;Department of Disaster Mitigation for Structures, Tongji University;Shanghai Municipal Engineering Design Institute (Group) Co., Ltd.;

【机构】 同济大学结构防灾减灾工程系； 上海市政工程设计研究总院(集团)有限公司；

【摘要】 基于自复位耗能节点(Self-centering Energy-dissipating Joint, SCEDJ)构造的钢筋混凝土框架是一种新型自复位结构,由梁端布置的弹性恢复装置提供结构地震恢复力,并在节点处设置阻尼耗能装置来耗散地震能量。为了研究SCEDJ框架结构的抗震性能,分别建立常规框架结构和SCEDJ框架结构的有限元模型,通过动力时程分析,分析其在不同地震作用下的动力响应。研究结果表明:在多遇地震作用下,SCEDJ框架的加速度响应仅为常规框架的1/2～3/5,减震效果显著;节点处阻尼器能有效控制SCEDJ框架的整体位移;在罕遇地震作用下,SCEDJ框架主体结构仍处于弹性状态,抗震性能优异。更多还原

【Abstract】 Reinforced concrete frame with Self-centering Energy Dissipating Joint(SCEDJ) is a new type self-centering structure. Elastic restoring devices and dampers are arranged at the beam-end of SCEDJ frame structure to provide resilience and dissipate seismic energy. In order to study the seismic performance of SCEDJ frame structure, the finite element models of conventional frame and SCEDJ frame were established respectively, and the dynamic time-history analysis was carried out to obtain the dynamic responses under different earthquakes. Research results show:(1) the acceleration response of SCEDJ frame is only 1/2～3/5 of that of conventional frame under frequent earthquakes which indicates that the earthquake-reduction effect of SCEDJ is remarkable;(2) the overall displacement of SCEDJ frame can be controlled effectively by the beam-end dampers;(3) the main body of SCEDJ frame is still in the elastic status under rare earthquakes, which indicates that SCEDJ frame has an excellent seismic performance.更多还原