结构工程师2013，Vol.29Issue(1)：92-99,8.
考虑近断层地震的隔震结构增设黏滞阻尼器效果分析
Analysis of an Base-isolated Structure With Viscous Dampers to Near-fault Ground Motions
摘要
Abstract
In the present paper, earthquakes in Xinjiang, China, and the near-fault ground motions were discussed. Base-isolated structures were introduced as well at the beginning. Two earthquake records; EL-CEN-TRO ARRAY #6 and CHY101 from the Pacific earthquake engineering center, and with a synthetic seismic wave, were used as the input of ground motions for seismic analyses of a hospital building in Kashi in Xinjiang province, China. Seismic responses of this building strengthened by two strategies, base isolation through u-sing Lead-Rubber-Bearings ( LRB) and LRB base-isolation along with adding viscous dampers, were compared. Through the comparative study, the isolation effect of the isolated structure only with LRB was not effective under near-fault ground motions, while the LRB isolated structure with additional viscous dampers showed better performances due to the increasing of the damping ratio. To ensure the reliability of the isolated structure in any earthquake situation, the design of the isolated structure need to consider using additional viscous dampers to increase the damping ratio of the isolated structure.关键词
近断层地震/铅芯叠层橡胶支座/黏滞阻尼器/抗震加固Key words
Near-fault ground motion, Lead rubber, Viscous dampers, Seismic reinforcement引用本文复制引用
陈通,翁大根,胡岫岩,宋和平,赵阳..考虑近断层地震的隔震结构增设黏滞阻尼器效果分析[J].结构工程师,2013,29(1):92-99,8.基金项目
上海市科学技术委员会基金资助(10DZ252000) （10DZ252000）
