高层组合隔震基于性能的设计方法研究应用.pdfVIP

第七届全国土木工程研究生学术论坛 东南大学 2009 高层组合隔震基于性能的设计方法研究及应用 杜东升，王曙光，刘伟庆，孙臻 (南京工业大学土木工程学院，江苏 南京 2100094) 摘要：为了使高层组合隔震技术的应用和推广具有更加完善的理论基础和设计依据，对高层隔震体系上部结构设计和隔震 层设计中的若干关键问题进行了探讨，研究了高阶振型和高阻尼对隔震效果的影响，提出了隔震体系上部结构竖向构件布 置的基本原则，分析了隔震层设计的基本原则和各类隔震装置的配置方法。根据以上基本理论，将基于性能的组合隔震设 计方法应用于目前国内最高的高层隔震设计中，充分考虑纯天然橡胶隔震支座、铅芯橡胶隔震支座、滑移隔震支座和粘滞 阻尼器的性能特征，将其按照相关组合原则配置于隔震层中。通过分析表明各类隔震装置充分发挥了设计性能，隔震层在 罕遇地震下工作状态稳定，上部结构的地震响应有了明显的降低，各项性能目标满足设计要求，本文最后对高层隔震结构 的相关构造要求进行了必要的说明。 关键词：性能设计； 隔震支座受拉；隔震支座面压 The design method and application in hybrid base-isolation of high-rise buildings based on performance evaluation DU Dongsheng, WANG Shuguang, LIU Weiqing, SUN Zhen （College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China ） Abstract: Some improvement advices in hybrid base-isolation of tall buildings are brought forward in order to providing theoretical basis on the application and popularizing of seismic isolation high-rise buildings. The key advices include influence of the more modes of vibrations on effect of isolation, the seismic influence coefficient of seismic isolated structure with different damping ratio, the arrangement principle of structure and the disadvantageous article of the code on tension of isolators, the correct design method of compress stress problem of isolator. Base on these principles, a 17 story reinforced concrete frame shear wall structure with height of 73.6m which located in Suqian, a region of high earthquake intensity. The building is one of the highest base-isolated buildings in China, its isolation devices consist of laminate rubber bearing, friction sliding bearing and viscous damper