基于性能的黏弹性阻尼器减震结构抗震设计

英文篇名：Performance-based seismic design for structures with viscoelastic dampers
中文刊名：地震工程与工程振动
英文刊名：Journal of Earthquake Engineering and Engineering Vibration
作者：韩建平 ; 阎茹 ; 李慧
英文作者：HAN Jianping1 ; 2 ; YAN Ru3 ; LI Hui1(1.Institute of Earthquake Protection and Disaster Mitigation ; Lanzhou University of Technology ; Lanzhou 730050 ; China ; 2.Research Institute of Structural Engineering and Disaster Reduction ; Tongji University ; Shanghai 200092 ; China ; 3.Wuxi Jiuyu Architectrual Design Co. ; LTD ; Wuxi 214432 ; China)
中文关键词：基于性能的抗震设计 ; 能力谱法 ; 模态推覆分析 ; 消能减震 ; 黏弹性阻尼器
英文关键词：performance-based seismic design ; capacity spectrum method ; modal pushover analysis ; energy dissipation ; viscoelastic damper
出版日期：2008-02-15
机构：兰州理工大学防震减灾研究所,无锡九宇建筑设计院有限公司,兰州理工大学防震减灾研究所甘肃兰州730050,同济大学结构工程与防灾研究所,上海200092,江苏无锡214432,甘肃兰州730050
年：2008
期：01
出版单位：地震工程与工程振动

摘要

根据黏弹性阻尼器的特点和抗震规范的要求,分别提出了用于黏弹性阻尼器减震结构抗震分析的弹性及弹塑性需求谱,前者是基于黏弹性阻尼器减震结构等效阻尼比的简化计算公式及规范规定的反应谱;后者是基于修正的V id icRμ-μ-T关系。在此基础上,借助模态推覆分析,提出了可以考虑高阶振型影响的黏弹性阻尼器消能减震结构体系的能力谱分析方法,并对一8层钢筋混凝土消能减震框架结构进行了"中震不坏,大震可修"性能水准下的抗震分析。算例结果表明,采用该方法分析黏弹性阻尼器减震结构体系是可行的、有效的。
According to the characteristics of viscoelastic damper(VED) and the requirements of the seismic code,the elastic and inelastic demand spectra are proposed respectively.The former is based on the simplified formulas of equivalent damping ratio and the response spectrum of the code.The latter is based on the modified R_μ-μ-T relationship proposed by Vidic.Furthermore,the performance-based approach using capacity spectrum method is presented for analyzing the buildings with VEDs and higher mode effects can be considered by virtue of modal pushover analysis.Finally,the analyses of an eight-storey reinforced concrete frame with or without VED are performed under two performance levels.The first level is that the building has no damage under moderate earthquakes and the second one is that the building is repairable under rarely occurring earthquakes.The results indicate that the proposed approach is viable and effective for performance evaluation of buildings with VEDs.

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