基于性能的层间隔震结构地震易损性分析
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摘要
提出一种基于性能的层间隔震结构地震易损性分析方法。定义了层间隔震结构的四个极限状态,提出基于层间隔震结构极限破坏状态确定结构抗震性能水平限值的方法。通过考虑近场与远场地震动的不确定性,采用增量动力分析(IDA)对比分析了一传统抗震结构和相应层间隔震结构在近、远场地震作用下的概率地震需求危险性及基于性能的地震易损性,分别得到传统抗震结构和相应层间隔震结构的地震危险性曲线和易损性曲线,给出层间隔震结构的破坏概率,探讨了层间隔震结构的破坏模式和破坏规律,为受地震灾害的层间隔震结构损伤评估提供依据。
A performance-based vulnerability analysis method of inter-story isolation structures is proposed. Four ultimate damage states for inter-story structures are defined,and also a method based on limit damage status is put forward to determine the limit values of structure seismic performance level. By considering the uncertainties of near-field and far-field ground motions characteristics,the probabilistic seismic hazard and performance-based seismic vulnerability between the traditional anti-seismic structure and inter-story isolation structure under near-field and far-field earthquake are analysed by using the results of incremental dynamic analysis( IDA). Seismic hazard curves and vulnerability curves of the traditional anti-seismic structure and inter-story isolation structure are obtained respectively,the damaging probability of the traditional anti-seismic structure is given,and also failure mode and rule of inter-story structures are discussed,all of which provide the basis for damage assessment to inter-story structures affected by earthquake.
A performance-based vulnerability analysis method of inter-story isolation structures is proposed. Four ultimate damage states for inter-story structures are defined,and also a method based on limit damage status is put forward to determine the limit values of structure seismic performance level. By considering the uncertainties of near-field and far-field ground motions characteristics,the probabilistic seismic hazard and performance-based seismic vulnerability between the traditional anti-seismic structure and inter-story isolation structure under near-field and far-field earthquake are analysed by using the results of incremental dynamic analysis( IDA). Seismic hazard curves and vulnerability curves of the traditional anti-seismic structure and inter-story isolation structure are obtained respectively,the damaging probability of the traditional anti-seismic structure is given,and also failure mode and rule of inter-story structures are discussed,all of which provide the basis for damage assessment to inter-story structures affected by earthquake.
引文
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[9]Luco.N,Cornell.C.A.Effects of connection fractures on SMRF seismic drift demands[J].Journal of Structural Engineering,2000,126(1):127-136.
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[12]江辉.近场地震下桥梁结构基于性能抗震设计的能量方法[D].北京:北京交通大学博士学位论文,2007.JIANG Hui.Performance-based seismic design of bridge structure excited by near-fault earthquake using energy concept[D].Beijing:Beijing Jiaotong University,2007.(in Chinese)
[13]刘文光,何文福,霍达,等.隔震结构设计加速度反应谱的取之研究[J].振动与冲击,2010,4(29):181-187.LIU Wenguang,HE Wenfu,HUO Da,et al.Modified equation for long period part of design response spectrum of an isolated structure[J].Journal of Vibration and Shock,2010,4(29):181-187.(in Chinese)
[14]Mackie KR,Stojadinovi B.Fragility basis for California highway overpass bridge seismic decision making[R].PEER report 2005/02.Berkeley:Pacific Earthquake Engineering Research Center,University of California Berkeley,2005.
[15]Padgett JE,Nielson BG,DesRoches R.Selection of optimal intensity measures in probabilistic seismic demand models of highway bridge portfolios[J].Earthquake Eng Struct Dyn 2008;37(5):711-25.
[16]M.Altug Erberik,Amr.Elnashai.Fragility analysis of flat-slab structures[J].Engineering Structures,2004,26(7):937-948.
[17]李刚,程耿东.基于性能的结构抗震设计—理论、方法与应用[M].北京:科学出版社,2004.LI Gang,CHENG Gengdong.Performance based seismic design theory、method and application[M].Beijing:Science Press,2004.(in Chinese)
[2]Shinozuka M,Feng MQ,Jee L.Statistic analysis of fragility curves[J].Journal of Engineering Mechanics,2000,126(20):1224-1231.
[3]Y.Pan,A.K.Agrawal,M.Agrawal et al.Seismic fragility of multispan simply:supported steel highway bridge in new York State.Ⅰ:bridge modeling,parametric analysis,and retrofit design[J].Journal of Bridge Engineer,2010,5(15):448-461.
[4]刘晶波,刘阳冰,闫秋实等.基于性能的方钢管混凝土框架结构地震易损性分析[J].土木工程学报,2010,43(2):39-47.LIU Jingbo,LIU Yangbing,YAN Qiushi,et al.Performance-based seismic fragility analysis of CFST frame structures[J].China Civil Engineering Journal,2010,43(2):39-47.(in Chinese)
[5]吕大刚,于晓辉,潘峰,等.基于改进云图法的结构概率地震需求分析[J].世界地震工程,2010,26(1):7-15.LV Dagang,YU Xiaohui,PAN Feng,et al.Probabilistic seismic demand analysis of structures based on an improved cloud method[J].World Earthquake Engineering,2010,26(1):7-15.
[6]姜绍飞,杨博,党永勤.易损性分析在结构抗震及健康监测中的应用[J].建筑科学与工程学报,2008,25(2):15-23.JIANG Shaofei,YAN Bo,DANG Yongqin.Application of vulnerability analysis in structural seism and health monitoring[J].Journal of Architecture and Civil Engineering,2008,25(2):15-23.
[7]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB50011-2010[S].Beijing:China Building Industry Press,2010.(in Chinese)
[8]Nielson BG,Desroches R.Seismic fragility methodology for highway bridges using a component level approach[J].Earthquake Eng Struct Dyn2007,36:823-39.
[9]Luco.N,Cornell.C.A.Effects of connection fractures on SMRF seismic drift demands[J].Journal of Structural Engineering,2000,126(1):127-136.
[10]T.J.Zhu,W.K.Tso,et al.Effect of peak ground a/v ratio on structural damage[J].Journal of Structural Engineering,1988,5(114):1019-1037.
[11]Jalayer.F.Direct probabilistic seismic analysis:implementing non-linear dynamic assessments[D].Ph D Dissertation,Stanford University,2003.
[12]江辉.近场地震下桥梁结构基于性能抗震设计的能量方法[D].北京:北京交通大学博士学位论文,2007.JIANG Hui.Performance-based seismic design of bridge structure excited by near-fault earthquake using energy concept[D].Beijing:Beijing Jiaotong University,2007.(in Chinese)
[13]刘文光,何文福,霍达,等.隔震结构设计加速度反应谱的取之研究[J].振动与冲击,2010,4(29):181-187.LIU Wenguang,HE Wenfu,HUO Da,et al.Modified equation for long period part of design response spectrum of an isolated structure[J].Journal of Vibration and Shock,2010,4(29):181-187.(in Chinese)
[14]Mackie KR,Stojadinovi B.Fragility basis for California highway overpass bridge seismic decision making[R].PEER report 2005/02.Berkeley:Pacific Earthquake Engineering Research Center,University of California Berkeley,2005.
[15]Padgett JE,Nielson BG,DesRoches R.Selection of optimal intensity measures in probabilistic seismic demand models of highway bridge portfolios[J].Earthquake Eng Struct Dyn 2008;37(5):711-25.
[16]M.Altug Erberik,Amr.Elnashai.Fragility analysis of flat-slab structures[J].Engineering Structures,2004,26(7):937-948.
[17]李刚,程耿东.基于性能的结构抗震设计—理论、方法与应用[M].北京:科学出版社,2004.LI Gang,CHENG Gengdong.Performance based seismic design theory、method and application[M].Beijing:Science Press,2004.(in Chinese)
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