随着隔震技术的发展,其在高层建筑结构中的应用得到了广泛的关注。高层隔震结构在振动台试验模型设计时有诸多问题值得重视,这些问题将直接影响到振动台试验结果的准确性。以西昌(9度区)某基础隔震高层框架-核心筒结构为原型结构,阐述了隔震结构振动台试验模型设计的基本流程和思路。提出了高层隔震结构模型设计不同于普通结构模型设计的几个特殊问题,包括大质量底座在相似设计中的处理、隔震支座等效的数量问题以及试验模型周期的估算等,以期为今后隔震结构振动台试验模型设计提供一定的参考。
With the development of base isolation,the high-rise isolated structure has been widely concerned. There are some significant problems in the model design of isolated high-rise structures,which have a great effect on the accuracy of shaking table test results.Based on a high-rise isolated structure in Xichang (seismic intensity 9),the basic process of the isolated model structure design for shaking table test is introduced.Some significant problems in the model design are presented,including the consideration of the massive base in the similitude design,simplification of the isolators and estimation of the model period.The solutions to the problems are useful for the future shaking table test model design of isolated structures.