高层建筑组合隔震的设计方法及应用
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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、滑移隔震支座和黏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.
In order to perfect both theoretical basis and designing foundation for hybrid base-isolation of tall buildings,some key issues about upper structure design for hybrid base-isolation system and isolation layer design,influence from high modes and high damping on isolated effect are investigated.Basic principles of vertical components arrangement for seismic isolation system are proposed,and basic principles of isolation layer design and distribution method of all kinds of isolation devices are analyzed.According to above foundamental theory,performance-based hybrid base-isolation design method is applied to the currently tallest domestic high-rise isolated building.The performance characteristics of purified natural rubber bearing,lead rubber bearing,sliding isolated bearing and viscous damper are fully taken into account.These bearings are equipped in isolation layer,according to the correlative combination principle.The study result indicates that all kinds of isolation devices bring the designed functions into full play.Isolation layer keeps a stable working status under rare earthquake,while seismic response of upper structure declines obviously,and all performance objectives satisfy design requirements.At last,necessary remarks are made for related structural requirements of high-rise isolated structures.
In order to perfect both theoretical basis and designing foundation for hybrid base-isolation of tall buildings,some key issues about upper structure design for hybrid base-isolation system and isolation layer design,influence from high modes and high damping on isolated effect are investigated.Basic principles of vertical components arrangement for seismic isolation system are proposed,and basic principles of isolation layer design and distribution method of all kinds of isolation devices are analyzed.According to above foundamental theory,performance-based hybrid base-isolation design method is applied to the currently tallest domestic high-rise isolated building.The performance characteristics of purified natural rubber bearing,lead rubber bearing,sliding isolated bearing and viscous damper are fully taken into account.These bearings are equipped in isolation layer,according to the correlative combination principle.The study result indicates that all kinds of isolation devices bring the designed functions into full play.Isolation layer keeps a stable working status under rare earthquake,while seismic response of upper structure declines obviously,and all performance objectives satisfy design requirements.At last,necessary remarks are made for related structural requirements of high-rise isolated structures.
引文
[1]王曙光,杜东升,刘伟庆.高层建筑结构隔震设计关键问题[J].南京工业大学学报:自然科学版,2009,31(1):67-72.Wang Shuguang,Du Dongsheng,Liu Weiqing.Key-problems of seismic isolation structure design in high-rise buildings[J].Journal of Nanjing University ofTechnology:Natural Science Edition,2009,31(1):67-72.(in Chinese)
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[3]刘伟庆,王曙光,杜东升.宿迁海关业务大楼基础隔震分析报告[R].南京:南京工业大学建筑技术发展中心,2007.
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[8]刘文光,杨巧荣,周福霖.大高宽比隔震结构地震反应的实用分析方法[J].地震工程与工程振动,2004,24(4):115-121.Liu Wenguang,Yang Qiaorong,Zhou Fulin.Simplifiedmethod of earthquake response analysis for slender isola-ted structure[J].Journal of Earthquake Engineeringand Engineering Vibration,2004,24(4):115-121.(inChinese)
[9]程华群,刘伟庆,王曙光.高层隔震建筑设计中隔震支座受拉问题分析[J].地震工程与工程振动,2007,27(4):162-164.Cheng Huaqun,Liu Weiqing,Wang Shuguang.Analy-sis of the tension of rubber bearings in the design of iso-lated high-rise buildings[J].Journal of Earthquake En-gineering and Engineering Vibration,2007,27(4):162-164.(in Chinese)
[10]日本建筑学会.隔震结构设计[M].刘文光,译.北京:地震出版社,2006.
[11]北村春幸.基于性能设计的建筑振动解析[M].裴星洙等,译.西安:西安交通大学出版社,2004.
[2]侯宝隆.日本隔震技术的新发展与控震技术的实际应用[J].工业建筑,2000,30(11):74-78.Hou Baolong.New developments of seismic isolationand response control technology in Japan[J].IndustrialConstruction,2000,30(11):74-78.(in Chinese)
[3]刘伟庆,王曙光,杜东升.宿迁海关业务大楼基础隔震分析报告[R].南京:南京工业大学建筑技术发展中心,2007.
[4]中华人民共和国建设部.GB50011—2001建筑抗震设计规范(2008版)[S].北京:中国建筑工业出版社,2008.
[5]杜东升,王曙光,刘伟庆,等.长周期高层隔震建筑的减震效果探讨[C]//第17届结构工程学术会议.苏州,2008:III10-III13.Du Dongsheng,Wang Shuguang,Liu Weiqing.Discus-sion on the seismic reduction effect of isolated long peri-od high-rise buildings[C]//The17th National Confer-ence on Civil Engineering.Suzhou,2008:III10-III13.(in Chinese)
[6]刘伟庆,王曙光,程华群.宿迁开发区商务中心基础隔震分析报告[R].南京:南京工业大学建筑技术发展中心,2006.
[7]王曙光,杜东升,刘伟庆,等.隔震结构不同阻尼比地震影响系数曲线的改进研究[J].建筑结构学报,2009,30(3):112-113.Wang Shuguang,Du Dongsheng,Liu Weiqing,et al.Research on seismic influence coefficient of seismic iso-lated structure with different damping ratio[J].Journalof Building Structures,2009,30(3):112-113.(inChinese)
[8]刘文光,杨巧荣,周福霖.大高宽比隔震结构地震反应的实用分析方法[J].地震工程与工程振动,2004,24(4):115-121.Liu Wenguang,Yang Qiaorong,Zhou Fulin.Simplifiedmethod of earthquake response analysis for slender isola-ted structure[J].Journal of Earthquake Engineeringand Engineering Vibration,2004,24(4):115-121.(inChinese)
[9]程华群,刘伟庆,王曙光.高层隔震建筑设计中隔震支座受拉问题分析[J].地震工程与工程振动,2007,27(4):162-164.Cheng Huaqun,Liu Weiqing,Wang Shuguang.Analy-sis of the tension of rubber bearings in the design of iso-lated high-rise buildings[J].Journal of Earthquake En-gineering and Engineering Vibration,2007,27(4):162-164.(in Chinese)
[10]日本建筑学会.隔震结构设计[M].刘文光,译.北京:地震出版社,2006.
[11]北村春幸.基于性能设计的建筑振动解析[M].裴星洙等,译.西安:西安交通大学出版社,2004.
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