土木工程与管理学报2017，Vol.34Issue(3)：1-7,26,8.
基础隔震结构在近断层水平-竖向地震联合作用下的动力响应
Seismic Response of Base-isolated Structures Under the Combined Action of Horizontal and Vertical Components of Near-fault Ground Motions
摘要
Abstract
Base-isolated structures show excellence performance under far-field earthquake.However, when subjected to near-fault ground motions, the isolation effects may be reduced to some extent.On one hand, the horizontal component of near-fault ground motions may lead to large horizontal displacements in the isolation layer.On the other hand, the large vertical acceleration of near fault ground motions will lead to significant variation in the vertical load of the bearings, which may lead to decrease in its horizontal stiffness.In extreme circumstance, the bearings may buckle under pressure or experience tensile damage.Considering that based isolated structures are assembled by isolation bearings and superstructures in series, the dynamic response and failure pattern of the bearings will significantly affect the dynamic response of the structure.In the view of this, nonlinear finite element model of base-isolated structures are built in ABAQUS software in this paper.The coupling effects of the bearings are simulated by Koh-Kelly model.Then dynamic response analysis are conducted to investigate the effects of different isolation parameters on the dynamic response of the base-isolated structures.关键词
基础隔震/铅芯橡胶支座/近断层地震动/Koh-Kelly力学模型Key words
base isolation/lead rubber bearings/near-fault ground motion/Koh-Kelly model分类
建筑与水利引用本文复制引用
朱宏平,张子翔,周方圆..基础隔震结构在近断层水平-竖向地震联合作用下的动力响应[J].土木工程与管理学报,2017,34(3):1-7,26,8.基金项目
国家自然科学基金(51008134 （）
51178203) （）
贵州省"十二五"重大科技专项(黔科合重大专项[2011]6014) （黔科合重大专项[2011]6014）
