长周期地震动作用下高层框架结构的损伤分析

为了研究长周期地震动作用下高层框架结构的抗震性能，利用地震损伤评估体系对高层结构进行损伤分析.在分析总结结构地震损伤模型的基础上，以一幢12层混凝土框架结构建筑为研究对象，利用振动台试验结果，采用数值模拟方法，从结构整体损伤和材料损伤2个层次进行了长周期地震动作用下高层框架结构的损伤分析，并与普通地震动作用下的结果进行了比较研究.结果表明：长周期地震动作用下结构的整体损伤指标明显大于普通地震动作用的结果，且混凝土损伤分布范围更广，为高层结构基于性能的抗震设计提供了参考.

Damage analysis on high-rise frame structure under long-period ground motion action

In order to study the anti-seismic performance of high-rise frame structures under long-period ground motion action,a seismic damage evaluation system was used to carry out the damage analysis on high-rise structures.Based on the analysis and summary for structural seismic damage models as well as with taking a twelve-storey concrete frame structure as the research object,utilizing the results of shaking table tests and adopting the numerical simulation method,the damage analysis on the high-rise frame structures under long-period ground motion action was carried out from both global structural damage and material damage,and was compared with the results under ordinary ground motion action.The results show that the global damage indexes of the structures under long-period ground motion action are significantly larger than those under ordinary ground motion action.Furthermore,the damage distribution range of concrete under long-period ground motion action is more extensive.The present research provides the reference for the performance-based anti-seismic design of high-rise structures.