某综合楼层间隔震设计及分析
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摘要
为探讨首层柱顶隔震体系的工程应用,以某首层架空的5层综合楼为背景,进行隔震设计和分析,同时讨论相关的结构、构造设计及工程经济性。时程分析表明:在7度地震作用下,上部结构有显著的减震效果;下部结构(首层独立柱)有增大的结构动力反应。首层独立柱按7度罕遇地震内力进行强度设计,保证了其在罕遇地震下不屈服并具有安全储备。着重讨论了独立柱的设计,表明了独立柱既满足结构安全又不影响架空层的利用。验证了首层为薄弱层的该框架结构应用首层柱顶隔震在技术上可靠,工程经济性上可行。
First-floor isolation is one of story isolation system,its engineering application is rare.In order to expatiate its engineering application comprehensively,isolation design and analysis of a five-story structure are carried out,of which first floor is open,meanwhile,related construction designs and engineering economics are discussed.Time-history analyses show that,under 7 degree earthquakes,vibration reduction effect of the superstructure is obviously;The substructure(independent columns of first-floor) has increase of structural dynamic response obviously.Strengths of the independent columns are designed according to the internal forces under 7 degree rare earthquakes,which ensures the substructure not to yield and has safety stock;Design of independent columns is emphatically discussed and it ensures structure safety and does not affect the use of the space of the open floor.It is verified that first-floor isolation technology applied on the first-floor weak structure is not only reliable in technology but also reasonable in economy.
First-floor isolation is one of story isolation system,its engineering application is rare.In order to expatiate its engineering application comprehensively,isolation design and analysis of a five-story structure are carried out,of which first floor is open,meanwhile,related construction designs and engineering economics are discussed.Time-history analyses show that,under 7 degree earthquakes,vibration reduction effect of the superstructure is obviously;The substructure(independent columns of first-floor) has increase of structural dynamic response obviously.Strengths of the independent columns are designed according to the internal forces under 7 degree rare earthquakes,which ensures the substructure not to yield and has safety stock;Design of independent columns is emphatically discussed and it ensures structure safety and does not affect the use of the space of the open floor.It is verified that first-floor isolation technology applied on the first-floor weak structure is not only reliable in technology but also reasonable in economy.
引文
[1]祁皑.层间隔震技术评述[J].地震工程与工程振动,2004,24(6):114-120.
[2]GB50011—2001建筑抗震设计规范[S].
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[4]潘鹏,曹海韵,齐玉军,等.底部薄弱层结构的柱顶隔震加固改造设计[J].工程抗震与加固改造,2000,20(3):100-107.
[5]吴应雄,祁皑,颜学渊.某层间隔震实际工程动力测试与分析[J].福州大学学报:自然科学版,2011,39(6):930-935.
[6]陆伟东,蓝宗建,刘伟庆.阻尼支撑控制结构薄弱层的设计方法研究[J].工程抗震与加固改造,2011,33(2):58-62.
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[9]刘伟庆,王曙光,林勇.宿迁市人防指挥大楼隔震设计方法研究[J].建筑结构学报,2005,26(2):82-86.
[10]CECS126∶2001叠层橡胶支座隔震技术规程[S].
[11]肖从真,薛彦涛,曾德民,等.成都凯德风尚高层建筑隔震设计与研究[J].建筑结构,2009,39(6):93-97.
[2]GB50011—2001建筑抗震设计规范[S].
[3]黄襄云.层间隔震减震结构的理论分析和振动台试验研究[D].西安:西安建筑科技大学,2008.
[4]潘鹏,曹海韵,齐玉军,等.底部薄弱层结构的柱顶隔震加固改造设计[J].工程抗震与加固改造,2000,20(3):100-107.
[5]吴应雄,祁皑,颜学渊.某层间隔震实际工程动力测试与分析[J].福州大学学报:自然科学版,2011,39(6):930-935.
[6]陆伟东,蓝宗建,刘伟庆.阻尼支撑控制结构薄弱层的设计方法研究[J].工程抗震与加固改造,2011,33(2):58-62.
[7]祁皑,郑国琛,阎维明.考虑参数优化的层间隔震结构振动台试验研究[J].建筑结构学报,2009,30(2):8-16.
[8]党育,杜永峰,李慧.基础隔震结构设计及施工指南[M].北京:水利水电知识产权出版社,2007:1-258.
[9]刘伟庆,王曙光,林勇.宿迁市人防指挥大楼隔震设计方法研究[J].建筑结构学报,2005,26(2):82-86.
[10]CECS126∶2001叠层橡胶支座隔震技术规程[S].
[11]肖从真,薛彦涛,曾德民,等.成都凯德风尚高层建筑隔震设计与研究[J].建筑结构,2009,39(6):93-97.
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