低位层间隔震技术在某框架结构的应用研究
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摘要
对7度抗震设防的某七层框架结构,采用底层柱顶隔震技术进行设计与分析,包括减震方案和底层结构形式的确定,有限元分析和隔震设计,构造设计以及工程经济性.结果表明:在多遇地震作用下,上部结构水平向减震系数为0.34,底层层间剪力减震效果同样明显;在罕遇地震作用下,上部结构基本处于弹性,底层位移角为1/1 682,隔震层有足够的稳定性和安全性,表明隔震设计提高了结构安全性;设计的底层柱和拉梁截面尺寸较大,但不影响底层的使用功能;工程造价有小幅提高,但综合效益好.
We designed and analyzed a seven-story frame structure in 7-degree earthquake protection which employed the first-story isolated technology.It included the selection of shock absorption scheme,identification of the substructure,FEM analysis and design of isolation layer.Moreover,we discussed construction design and engineering economy in detail.Results showed that under frequently occurred earthquakes the damping coefficient of superstructure in horizontal direction was 0.34 and reduction effect of the first-floor shear force was also remarkable;the superstructure was basically in the state of elasticity and drift angle of bottom layer is 1/1 682 under rare earthquakes,so there was sufficient stability and security for isolation layer and the integrated safety of structure was improved;section sizes of first-floor columns and pull beams may be larger,but it did not affect the use of first floor.The project cost was slightly improved,but its overall efficiency was well.
We designed and analyzed a seven-story frame structure in 7-degree earthquake protection which employed the first-story isolated technology.It included the selection of shock absorption scheme,identification of the substructure,FEM analysis and design of isolation layer.Moreover,we discussed construction design and engineering economy in detail.Results showed that under frequently occurred earthquakes the damping coefficient of superstructure in horizontal direction was 0.34 and reduction effect of the first-floor shear force was also remarkable;the superstructure was basically in the state of elasticity and drift angle of bottom layer is 1/1 682 under rare earthquakes,so there was sufficient stability and security for isolation layer and the integrated safety of structure was improved;section sizes of first-floor columns and pull beams may be larger,but it did not affect the use of first floor.The project cost was slightly improved,but its overall efficiency was well.
引文
[1]Kobayashi Masahito,Ko Tadak.Earthquake response prediction and aseismic performance of mid-story isolated system[J].Journal of Structural and Construction Engineering,Architectural Institute of Japan,2002,558:109-116.
[2]Kamada T,Fujita T.Current status of seismic isolation and vibration control to buildings[C]//Proceedings of the 10th WorldConference on Seismic Isolation,Energy Dissipation and Active Vibrations Control of Structures.Istanbul:[s.n.],2007.
[3]Wang Shiang-jung,Chang Kuo-chun,Hwang Jenn-shin,et al.Dynamic behavior of a building structure tested with baseand mid-story isolation systems[J].Engineering Structures,2012,42:420-433.
[4]祁皑,林云腾,郑国琛.层间隔震结构工作机理研究[J].地震工程与工程振动,2006,26(4):239-243.
[5]中华人民共和国行业标准.GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[6]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.
[7]祁皑,郑国琛,闫维明.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]中华人民共和国行业标准.GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2008.
[9]杜永峰,唐能.串联隔震结构震损倒塌动态模型分析[J].工程抗震与加固改造,2012,34(1):42-46.
[10]Chang K C,Hwang J S,Chan T C,et al.Application,R&D and design rules for seismic isolation and energy dissipation sys-tems for buildings and bridges in Taiwan[C]//Proceedings of the 10th Word Conference on Seismic Isolation,Dissipation andActive Vibrations Control of Structures.Istanbul:[s.n.],2007.
[11]吴应雄,祁皑.某综合楼层间隔震设计及分析[J].工业建筑,2012,42(3):43-48.
[12]吴应雄,祁皑.柱顶隔震技术在某首层薄弱层框架结构中的应用[J].延边大学学报:自然科学版,2011,37(4):349-354.
[13]潘鹏,叶列平,曹海韵,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,2010,20(3):100-107.
[14]吴应雄.钢筋混凝土底层柱顶隔震框架结构试验与设计方法研究[D].福州:福州大学,2012.
[15]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.
[16]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国建筑科学研究院,2001.
[17]傅金华.日本抗震结构及隔震结构的设计方法[M].北京:中国建筑工业出版社,2011.
[18]李开伦.基础隔震技术在北京某重大公共建筑中的应用[J].建筑结构,2006,36(5):105-109.
[2]Kamada T,Fujita T.Current status of seismic isolation and vibration control to buildings[C]//Proceedings of the 10th WorldConference on Seismic Isolation,Energy Dissipation and Active Vibrations Control of Structures.Istanbul:[s.n.],2007.
[3]Wang Shiang-jung,Chang Kuo-chun,Hwang Jenn-shin,et al.Dynamic behavior of a building structure tested with baseand mid-story isolation systems[J].Engineering Structures,2012,42:420-433.
[4]祁皑,林云腾,郑国琛.层间隔震结构工作机理研究[J].地震工程与工程振动,2006,26(4):239-243.
[5]中华人民共和国行业标准.GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[6]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.
[7]祁皑,郑国琛,闫维明.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]中华人民共和国行业标准.GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2008.
[9]杜永峰,唐能.串联隔震结构震损倒塌动态模型分析[J].工程抗震与加固改造,2012,34(1):42-46.
[10]Chang K C,Hwang J S,Chan T C,et al.Application,R&D and design rules for seismic isolation and energy dissipation sys-tems for buildings and bridges in Taiwan[C]//Proceedings of the 10th Word Conference on Seismic Isolation,Dissipation andActive Vibrations Control of Structures.Istanbul:[s.n.],2007.
[11]吴应雄,祁皑.某综合楼层间隔震设计及分析[J].工业建筑,2012,42(3):43-48.
[12]吴应雄,祁皑.柱顶隔震技术在某首层薄弱层框架结构中的应用[J].延边大学学报:自然科学版,2011,37(4):349-354.
[13]潘鹏,叶列平,曹海韵,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,2010,20(3):100-107.
[14]吴应雄.钢筋混凝土底层柱顶隔震框架结构试验与设计方法研究[D].福州:福州大学,2012.
[15]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.
[16]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国建筑科学研究院,2001.
[17]傅金华.日本抗震结构及隔震结构的设计方法[M].北京:中国建筑工业出版社,2011.
[18]李开伦.基础隔震技术在北京某重大公共建筑中的应用[J].建筑结构,2006,36(5):105-109.
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