硬土场地地震动概率反应谱分析
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摘要
结构抗震设计一直以统计平均值为设防水准,此方法简单但缺乏概率意义的评估值。本文基于硬土场地内309条新获得的地震动记录,建立周期、区间与概率值三者的三维概率分布图,发现概率值难以集中在区间值为1附近,说明以统计平均值为设防水准得出的地震作用概率水平并不相同,应采用统一的累积概率水准进行抗震设防。为此建立了三维累积概率分布图,得出了不同概率保证下的地震影响系数反应谱,并拟合出8度设防水准下不同概率保证的地震影响系数反应谱回归公式。
The architecture earthquake-resistance design has took the statistics mean value as fortification standards,which is simple but lacks the probability assessments.Based on the 309 new land records with hard ground being calculated,the three-dimensional distributed probability chart about the periods,interval and probability is established in this paper.The probability value is found difficult to concentrate near the interval value of 1,indicating the probability level of the earthquake,being gained from the statistics mean value for the fortification standard is not the same,so the unified cumulative probability standard to the earthquake-resistance design should be adopt.Therefore,it is necessary to establish the cumulative probability chart of the three-dimensional maps,and obtains the response spectrum of the earthquake effects coefficient under different probability guarantee rate.At one time it fits the response spectrum of the earthquake influence coefficient guaranteed by different probability under eight minimum security standards.
The architecture earthquake-resistance design has took the statistics mean value as fortification standards,which is simple but lacks the probability assessments.Based on the 309 new land records with hard ground being calculated,the three-dimensional distributed probability chart about the periods,interval and probability is established in this paper.The probability value is found difficult to concentrate near the interval value of 1,indicating the probability level of the earthquake,being gained from the statistics mean value for the fortification standard is not the same,so the unified cumulative probability standard to the earthquake-resistance design should be adopt.Therefore,it is necessary to establish the cumulative probability chart of the three-dimensional maps,and obtains the response spectrum of the earthquake effects coefficient under different probability guarantee rate.At one time it fits the response spectrum of the earthquake influence coefficient guaranteed by different probability under eight minimum security standards.
引文
[1]Housner G W.Behaviour of Structures DuringEarthquakes[J].ASCE,1959,85(EM4):1959:109～129
[2]Newmark N M.The Trend of Seismic Analysis andDesign for Tall Duilding.Earthquake Engineering[M],Beijing:Science Press.1978
[3]Newmark N M.Earthquake Resistant Design and ATCProvisions[A].Proc.3Rd CCEE[C].1979,1:609～651
[4]Fajfar P and Fischinger M.Earquake Design SpectraConsidering Duration of Ground Motion[A].Proc.4thU.S.NCEE[C].Palm,springs,Cailfornia,1990,2:15～24
[5]Lu X L,Zhou D S.Dutility Demand Spectra andInelastic Displacement Spectra C-nsidering SollCondition and Design Characteristic Period[J].Earthquake Engineering and Engineering Vibration,2004,24(1):39～48
[6]Yi W J,Zhang H Y.Theoretical Research onProbabilistic Ductility Demand Spectrum of Structuresunder Seismic Loads[J].Engineering Mechanics,2006,23(5):30～38
[7]Liu W F,Chen G L.Determination for PerformanceSpectrum of Aseismatic Building[J].EngineeringMechanics,2008,25(2):160～166
[8]刘文锋,付兴潘,于振兴等.反应谱特征周期的统计分析[J].青岛理工大学学报,2008Liu Wen-feng,Fu Xing-pan,Yu Zhen-xing,et al.TheStatistical Analysis of Response Spectrum in TheCharacteristic Period[J].Qingdao TechnologicalUniversity,2008(in Chinese)
[9]于振兴.I类场地地震反应谱研究[D].青岛:青岛理工大学,2009.12Yu Zhen-xing.The Seismic Response Spectra Researchin I site[J].Qingdao:Qingdao TechnologicalUniversity,2009,12(in Chinese)
[10]ATC(Applied Technology Council).TentativeProvisions for the Development of Seismic Regulationsfor Buildings(ATC-3-06).1982,Redwood City,Calif.:Applied Technology Council
[11]肖明葵.基于性能的抗震结构位移及能量反应分析方法研究[D].重庆:重庆大学,2004,6Xiao Ming-kui.The Analysis Method Reseach of TheArchitecture Earthquake-resistance Displacement toPerformance-based and its Energy Response[D].Chongqing:Chongqing University,2004,6(in Chinese)
[12]Building Seismic Safety Council.FEMA450Recommended provisions for seismic regulations for newbuildings and other structures Part1:Provisions,Washington DC:Building Seismic Safety Council,National Institute of Building Sciences,2003
[13]GB50011-2001,Code for Seismic Design of Building[S]
[2]Newmark N M.The Trend of Seismic Analysis andDesign for Tall Duilding.Earthquake Engineering[M],Beijing:Science Press.1978
[3]Newmark N M.Earthquake Resistant Design and ATCProvisions[A].Proc.3Rd CCEE[C].1979,1:609～651
[4]Fajfar P and Fischinger M.Earquake Design SpectraConsidering Duration of Ground Motion[A].Proc.4thU.S.NCEE[C].Palm,springs,Cailfornia,1990,2:15～24
[5]Lu X L,Zhou D S.Dutility Demand Spectra andInelastic Displacement Spectra C-nsidering SollCondition and Design Characteristic Period[J].Earthquake Engineering and Engineering Vibration,2004,24(1):39～48
[6]Yi W J,Zhang H Y.Theoretical Research onProbabilistic Ductility Demand Spectrum of Structuresunder Seismic Loads[J].Engineering Mechanics,2006,23(5):30～38
[7]Liu W F,Chen G L.Determination for PerformanceSpectrum of Aseismatic Building[J].EngineeringMechanics,2008,25(2):160～166
[8]刘文锋,付兴潘,于振兴等.反应谱特征周期的统计分析[J].青岛理工大学学报,2008Liu Wen-feng,Fu Xing-pan,Yu Zhen-xing,et al.TheStatistical Analysis of Response Spectrum in TheCharacteristic Period[J].Qingdao TechnologicalUniversity,2008(in Chinese)
[9]于振兴.I类场地地震反应谱研究[D].青岛:青岛理工大学,2009.12Yu Zhen-xing.The Seismic Response Spectra Researchin I site[J].Qingdao:Qingdao TechnologicalUniversity,2009,12(in Chinese)
[10]ATC(Applied Technology Council).TentativeProvisions for the Development of Seismic Regulationsfor Buildings(ATC-3-06).1982,Redwood City,Calif.:Applied Technology Council
[11]肖明葵.基于性能的抗震结构位移及能量反应分析方法研究[D].重庆:重庆大学,2004,6Xiao Ming-kui.The Analysis Method Reseach of TheArchitecture Earthquake-resistance Displacement toPerformance-based and its Energy Response[D].Chongqing:Chongqing University,2004,6(in Chinese)
[12]Building Seismic Safety Council.FEMA450Recommended provisions for seismic regulations for newbuildings and other structures Part1:Provisions,Washington DC:Building Seismic Safety Council,National Institute of Building Sciences,2003
[13]GB50011-2001,Code for Seismic Design of Building[S]
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