【摘要】 为研究转换梁对既有RC框架结构基础隔震性能影响，通过使用有限元软件MIDAS，分别构建了某市教育交流中心非隔震和隔震模型。首先，通过进行多遇地震作用下的抗震响应分析，确定结构的自振周期、阵型质量参与系数等参数，然后再进行罕遇地震作用下的结构动力弹塑性时程分析，确定结构耗能分布状况。结果表明：添加隔震层转换梁，提升了隔震结构的整体性，结构塑性损伤减小，提高结构极限承载力；型钢转换梁相较混凝土转换梁，更适用于既有建筑装配式隔震。更多还原

【Abstract】 In order to study the influence of transfer beams on the seismic isolation performance of existing RC frame structure foundations,the non-isolated and isolated models of a city education exchange center were constructed by using the finite element software MIDAS.Firstly,through the seismic response analysis under the action of frequent earthquakes,the parameters such as the natural vibration period of the structure and the mass participation coefficient of the formation are determined,and then the dynamic elastic-plastic time history analysis of the structure under the action of rare earthquakes is carried out to determine the energy consumption distribution of the structure.The results show that the addition of the isolation layer transfer beam improves the integrity of the seismic isolation structure,reduces the structural plastic damage,and improves the ultimate bearing capacity of the structure.更多还原