震损RC框架结构减震加固的可修性研究
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摘要
如何快速判定震损建筑可修与否是震后抗震鉴定与应急修复加固工作的重要环节。以震损RC框架结构减震加固为研究内容,分析减震加固的基本原理,并基于反应谱理论探讨等效周期、等效阻尼比与反应谱参数之间的定量关系。同时,从安全性与经济性角度出发,初步确定震损RC框架结构的可修指标及采用消能减震加固技术的可修范围,给出实际工程中实施可修性评价的不同途径,藉此期望能为震后RC框架结构减震加固工作提供一定的参考依据。
For seismic appraisal and emergent retrofit after earthquakes, it is a key point to fast evaluate whether the earthquakedamaged buildings are reparable or not. This paper focus on seismic retrofit of earthquake-damaged RC framed structures with energy dissipation devices. Herein the basic principle of damping retrofit is elaborated, and the corresponding relationships among equivalent period, equivalent damping ratio and response spectrum parameters are discussed in light of response spectrum theory. Moreover, based on the consideration of safety and economy, some repairable indexes are selected for seismic retrofit of RC frame structures with energy dissipation devices, and their values ranges are preliminarily determined. In the end, two approaches to reparability assessment are proposed for different field conditions and various requirements in practical projects, which are the method based on equivalent single degree of freedom system(ESDOF) and the method directly based on multi-story framed structures. On the basis of efforts made in this paper, it is hoped to provide some references for seismic retrofit of earthquake-damaged RC framed structures with energy dissipation devices.
For seismic appraisal and emergent retrofit after earthquakes, it is a key point to fast evaluate whether the earthquakedamaged buildings are reparable or not. This paper focus on seismic retrofit of earthquake-damaged RC framed structures with energy dissipation devices. Herein the basic principle of damping retrofit is elaborated, and the corresponding relationships among equivalent period, equivalent damping ratio and response spectrum parameters are discussed in light of response spectrum theory. Moreover, based on the consideration of safety and economy, some repairable indexes are selected for seismic retrofit of RC frame structures with energy dissipation devices, and their values ranges are preliminarily determined. In the end, two approaches to reparability assessment are proposed for different field conditions and various requirements in practical projects, which are the method based on equivalent single degree of freedom system(ESDOF) and the method directly based on multi-story framed structures. On the basis of efforts made in this paper, it is hoped to provide some references for seismic retrofit of earthquake-damaged RC framed structures with energy dissipation devices.
引文
[1]JGJ 116—2009建筑抗震加固技术规程[S].北京:中国建筑工业出版社,2009(JGJ 116—2009 Technical specification for seismic strengthening of buildings[S].Beijing:China Architecture&Building Press,2009(in Chinese))
[2]GB 50023—2009建筑抗震鉴定标准[S].北京:中国建筑工业出版社,2009(GB 50023—2009 Standard for seismic appraisal of buildings[S].Beijing:China Architecture&Building Press,2009(in Chinese))
[3]通海地震影响场调查组.通海地震的烈度分布与场地影响[R]//地震工程研究报告集.北京:科学出版社,1977
[4]民用建筑抗震组.阳江地震中多层砖房的震害及其地震荷载系数的反算[R]//地震工程研究报告集.北京:科学出版社,1977
[5]Lomnitz C,Rosenblueth E.Seismic risk and engineering decisions[M].New York:Elsevier Scientific Publishing,1976
[6]胡聿贤.地震工程学[M].第二版.北京:地震出版社,2006(Hu Yuxian.Earthquake Engineering[M].2nd edition.Beijing:Seismological Press,2006(in Chinese))
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[8]周云.耗能减震加固技术与设计方法[M].北京:科学出版社,2006
[9]JSSI Manual.Design and construction manual for passively controlled buildings[M].Tokyo,Japan:Japan Society of Seismic Isolation,2007
[10]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010(in Chinese))
[11]Ghobarah A,Abou-Elfath H,Biddah A.Response-based damage assessment of structures[J].Earthquake Engineering and Structural Dynamics,1999,28(1):79-104
[12]Ren W X,De Roeck G.Structural damage identification using modal data.I:Simulation verification[J].Journal of Structural Engineering,2002,128(1):87-95
[13]Gulkan P,Sozen M A.Inelastic responses of reinforced concrete structures to earthquakes motions[C]//ACI Journal Proceedings.ACI,1974,71(12):604-610
[14]Shibata A,Sozen M A.Substitute-structure method for seismic design in R/C[J].Journal of the Structural Division,1976,102(1):1-18
[15]Clough R W,Penzein J.Dynamics of structures[M].New York:Mc Graw-Hill,1993
[16]Chopra A K.Dynamics of structures:theory and applications to earthquake engineering[M].2nd Edition,New Delhi:Prentice Hall of India Private Limited.,2003
[17]钱稼茹,罗文斌.建筑结构基于位移的抗震设计[J].建筑结构,2001,31(4):3-6(Qian Jiaru,Luo Wenbin.Displacement based seismic design methodology for building structures[J].Building Structure,2001,31(4):3-6(in Chinese))
[18]梁兴文,黄雅捷,杨其伟.钢筋混凝土框架结构基于位移的抗震设计方法研究[J].土木工程学报,2005,38(9):53-60(Liang Xingwen,Huang Yajie,Yang Qiwei.Displacement-based seismic design method of RC frames[J].China Civil Engineering Journal,2005,38(9):53-60(in Chinese))
[2]GB 50023—2009建筑抗震鉴定标准[S].北京:中国建筑工业出版社,2009(GB 50023—2009 Standard for seismic appraisal of buildings[S].Beijing:China Architecture&Building Press,2009(in Chinese))
[3]通海地震影响场调查组.通海地震的烈度分布与场地影响[R]//地震工程研究报告集.北京:科学出版社,1977
[4]民用建筑抗震组.阳江地震中多层砖房的震害及其地震荷载系数的反算[R]//地震工程研究报告集.北京:科学出版社,1977
[5]Lomnitz C,Rosenblueth E.Seismic risk and engineering decisions[M].New York:Elsevier Scientific Publishing,1976
[6]胡聿贤.地震工程学[M].第二版.北京:地震出版社,2006(Hu Yuxian.Earthquake Engineering[M].2nd edition.Beijing:Seismological Press,2006(in Chinese))
[7]Soong T T,Dargush G F.结构工程中的被动消能系统[M].董平,译北京:科学出版社,2005(Soong T T,Dargush G F.Passive energy dissipation systems in structural engineering[M].Beijing:Science Press,2005(in Chinese))
[8]周云.耗能减震加固技术与设计方法[M].北京:科学出版社,2006
[9]JSSI Manual.Design and construction manual for passively controlled buildings[M].Tokyo,Japan:Japan Society of Seismic Isolation,2007
[10]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010(in Chinese))
[11]Ghobarah A,Abou-Elfath H,Biddah A.Response-based damage assessment of structures[J].Earthquake Engineering and Structural Dynamics,1999,28(1):79-104
[12]Ren W X,De Roeck G.Structural damage identification using modal data.I:Simulation verification[J].Journal of Structural Engineering,2002,128(1):87-95
[13]Gulkan P,Sozen M A.Inelastic responses of reinforced concrete structures to earthquakes motions[C]//ACI Journal Proceedings.ACI,1974,71(12):604-610
[14]Shibata A,Sozen M A.Substitute-structure method for seismic design in R/C[J].Journal of the Structural Division,1976,102(1):1-18
[15]Clough R W,Penzein J.Dynamics of structures[M].New York:Mc Graw-Hill,1993
[16]Chopra A K.Dynamics of structures:theory and applications to earthquake engineering[M].2nd Edition,New Delhi:Prentice Hall of India Private Limited.,2003
[17]钱稼茹,罗文斌.建筑结构基于位移的抗震设计[J].建筑结构,2001,31(4):3-6(Qian Jiaru,Luo Wenbin.Displacement based seismic design methodology for building structures[J].Building Structure,2001,31(4):3-6(in Chinese))
[18]梁兴文,黄雅捷,杨其伟.钢筋混凝土框架结构基于位移的抗震设计方法研究[J].土木工程学报,2005,38(9):53-60(Liang Xingwen,Huang Yajie,Yang Qiwei.Displacement-based seismic design method of RC frames[J].China Civil Engineering Journal,2005,38(9):53-60(in Chinese))
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