基于性能抗震设计方法与基于承载力抗震设计方法比较研究
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摘要
通过研究基于性能抗震设计方法与传统基于承载力抗震设计方法的区别,指出基于承载力抗震设计方法可能存在的问题以及性能设计方法的解决之道,同时分析指出承载力并不是影响消能减震结构的最主要因素,结构的模态位移、顶点最大位移及延性与减震结构的等效阻尼比密切相关,位移设计方法是比传统基于承载力抗震设计方法更加适合于消能减震结构的设计方法,最后指出基于位移设计方法存在的问题和未来发展方向。
By comparing the performance-based seismic design method(PBSD) and bearing capacity-based design method(BCBD),it is concluded that PBSD could obtain better results than BCBD.In the design of the energy dissipation structures(EDS),force-carrying capacity is not the controlling factor while structural modal displacement,maximum roof displacement and ductility have more influence on the equivalent damping ratio of the EDS.Displacement-based seismic design method(DBSD) is thus a more efficient method in the analysis of passive energy dissipation structures.The existing problems and future research directions of DBSD are put forward at the end of the paper.
By comparing the performance-based seismic design method(PBSD) and bearing capacity-based design method(BCBD),it is concluded that PBSD could obtain better results than BCBD.In the design of the energy dissipation structures(EDS),force-carrying capacity is not the controlling factor while structural modal displacement,maximum roof displacement and ductility have more influence on the equivalent damping ratio of the EDS.Displacement-based seismic design method(DBSD) is thus a more efficient method in the analysis of passive energy dissipation structures.The existing problems and future research directions of DBSD are put forward at the end of the paper.
引文
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[3]Seleemah A A,Constantinou M C.Investigation ofseismic response of buildings with linear and nonlinearfluid viscous dampers.Rep.No.NCEER-97-0004[R].National Center for Earthquake EngineeringResearch,State University of New York at Buffalo,Buffalo,N.Y.
[4]Ramirez O M,Constantinou M C,Gomez J D,et al.Evaluation of simplified methods of analysis ofyielding structures with damping systems[J].Earthquake Spectra,August 2002,18(3):501-530.
[5]Priestley M J N.Displacement-Based Approaches toRational Limit States Design of New Structures[C].1998,Keynote Address in the 11th EuropeanConference on Earthquake Engineering,Paris,France.
[6]Medhekar M S,Kennedy D T L.Displacement-BasedSeismic Design of Building-Theory[J].EngineeringStructures,2000,22:201-209.
[7]Lin Y Y,Tsai M H,Hwang J S,et al.Directdisplacement-based design for building with passiveenergy dissipation systems[J].EngineeringStructures,2003,(25):25-37.
[8]Fajfar P,Krawinkler Helmut.Seismic designmethodologies for the next generation of codes[C]//proceedings of the International Workshop on SeismicDesign Methodologies for the Next Generation ofCodes,Bled,Slovenia,June,1997.
[9]Miranda E,Ruiz-Garcia J.Evaluation of approximatemethod to estimate maximum inelastic displacementdemands[J].Earthquake Engineering and StructuralDynamics,2002,31(3):539-560.
[10]Bommer J J,Elnashai A S.Displacement spectra forseismic design[J].Journal of earthquake engineering,1999,(3):1-32.
[11]Hao H,Guan J.Development of ground motiondisplacement response spectra for use in performance-based design[C].The 11th International Symposiumon Structural Engineering for Young Experts,Tianjin,P.R.China,August 2002:595-601.
[12]吕西林,周定松.考虑场地类别与设计分组的延性需求谱和弹塑性位移反应谱[J].地震工程与工程振动,2004,24(1):39-48.
[13]周定松,吕西林.延性需求谱在基于性能的抗震设计中的应用[J].地震工程与工程振动,2004,24(1):30-38.
[2]Building Seismic Safety Council.NEHRP guidelinesfor the seismic rehabilitation of buildings[R].FEMA-273,Federal Emergency Management Agency,1997,Washington,D.C.
[3]Seleemah A A,Constantinou M C.Investigation ofseismic response of buildings with linear and nonlinearfluid viscous dampers.Rep.No.NCEER-97-0004[R].National Center for Earthquake EngineeringResearch,State University of New York at Buffalo,Buffalo,N.Y.
[4]Ramirez O M,Constantinou M C,Gomez J D,et al.Evaluation of simplified methods of analysis ofyielding structures with damping systems[J].Earthquake Spectra,August 2002,18(3):501-530.
[5]Priestley M J N.Displacement-Based Approaches toRational Limit States Design of New Structures[C].1998,Keynote Address in the 11th EuropeanConference on Earthquake Engineering,Paris,France.
[6]Medhekar M S,Kennedy D T L.Displacement-BasedSeismic Design of Building-Theory[J].EngineeringStructures,2000,22:201-209.
[7]Lin Y Y,Tsai M H,Hwang J S,et al.Directdisplacement-based design for building with passiveenergy dissipation systems[J].EngineeringStructures,2003,(25):25-37.
[8]Fajfar P,Krawinkler Helmut.Seismic designmethodologies for the next generation of codes[C]//proceedings of the International Workshop on SeismicDesign Methodologies for the Next Generation ofCodes,Bled,Slovenia,June,1997.
[9]Miranda E,Ruiz-Garcia J.Evaluation of approximatemethod to estimate maximum inelastic displacementdemands[J].Earthquake Engineering and StructuralDynamics,2002,31(3):539-560.
[10]Bommer J J,Elnashai A S.Displacement spectra forseismic design[J].Journal of earthquake engineering,1999,(3):1-32.
[11]Hao H,Guan J.Development of ground motiondisplacement response spectra for use in performance-based design[C].The 11th International Symposiumon Structural Engineering for Young Experts,Tianjin,P.R.China,August 2002:595-601.
[12]吕西林,周定松.考虑场地类别与设计分组的延性需求谱和弹塑性位移反应谱[J].地震工程与工程振动,2004,24(1):39-48.
[13]周定松,吕西林.延性需求谱在基于性能的抗震设计中的应用[J].地震工程与工程振动,2004,24(1):30-38.
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