考虑强地面运动持时影响的概率地震需求模型
|
摘要
选择合理的持时衰减关系,利用Monte-Carlo方法,抽取持时样本,根据震级M、震中距R和局部场地土壤条件S以及持时样本,选择符合条件的实际地震波记录,并进行合理的调值,对一座钢筋混凝土桥墩进行了非线性动力时程分析。对比强地面运动持时与能量需求参数和累积破坏参数的相关性,发现:幅值、频谱和持时对能量需求参数和累积破坏参数的影响是强烈耦合的,且强地面运动持时对两者的影响比较显著;在选择结构第一模态周期谱加速度和合理的能量需求参数,并分别作为地面运动强度参数IM和EDP建立概率地震需求模型时,要考虑持时的影响。
Probabilistic seismic demand model(PSDM)is an important part of the performance-based earthquake engineering methodology which necessitates the probabilistic evaluation of engineering demand parameters(EDP).There is the most significant influence of the variability of strong motions on the probabilistic evaluation of EDP,such as the influence of the duration of strong motion.We select reasonable attenuation relationship of duration of strong motion,the samples of duration using Monte-Carlo method,the condition-matched earthquake records according to magnitude,epicentral distance,local soil conditions and the samples of duration,and analyze the nonlinear dynamic time history on a RC column using selected records by reasonable scaling.Through comparing the correlation between the duration of ground motion and the energy demand measures and cumulated damage measures,we find that the influences of amplitude,spectral characteristics and duration on two measures above are strongly coupled and the influence of duration on them is significant.Moreover,when the first mode period spectral acceleration and reasonable energetic demand measures are used to be intensity measure and EDP respectively to build PSDM,the influence of duration should be considered.
Probabilistic seismic demand model(PSDM)is an important part of the performance-based earthquake engineering methodology which necessitates the probabilistic evaluation of engineering demand parameters(EDP).There is the most significant influence of the variability of strong motions on the probabilistic evaluation of EDP,such as the influence of the duration of strong motion.We select reasonable attenuation relationship of duration of strong motion,the samples of duration using Monte-Carlo method,the condition-matched earthquake records according to magnitude,epicentral distance,local soil conditions and the samples of duration,and analyze the nonlinear dynamic time history on a RC column using selected records by reasonable scaling.Through comparing the correlation between the duration of ground motion and the energy demand measures and cumulated damage measures,we find that the influences of amplitude,spectral characteristics and duration on two measures above are strongly coupled and the influence of duration on them is significant.Moreover,when the first mode period spectral acceleration and reasonable energetic demand measures are used to be intensity measure and EDP respectively to build PSDM,the influence of duration should be considered.
引文
胡聿贤.2006.地震工程学(第2版)[M].北京:地震出版社.
Benjamin J R,Cornell C A.1970.Probability,statistics and decision forcivil engineers[M].New York:McGraw-Hill,Inc.
Bolt B A.1973.Duration of strong ground motion[C]//Proceedings ofthe5th World Conference on Earthquake Engineering,Rome,1:1304-1313.
Chai TH,Romstad K M,Bird S M.1995.Energy-based linear damagemodel for high-intensity seismic loading[J].Structural Engineer-ing,121(5):857-864.
Cornell C A,Jalayer F,Hamburger R O,et al.2002.Probabilistic ba-sis for2000SAC/FEMA steel moment frame guidelines[J].Jour-nal of Structural Engineering,128(4):526-533.
Dobry R,Idriss I M,Ng E.1978.Duration characteristics of horizontalcomponents of strong-motion earthquake records[J].BSSA,68(5):1487-1520.
El-Bahy A,Kunnath S K,Stone W C,et al.1999.Cumulative seismicdamage of circular bridge columns:benchmark and low-cycle fa-tigue tests[J].ACI Sturct J,96(4):633-641.
Harmsen S,Frankel A.2001.Geographical deaggregation of seismic haz-ard in the United States[J].BSSA,91(1):13-26.
Jongwon L,Russell A G.2007.Empirical Strong Motion Duration Rela-tionships for the Central/Eastern US[C]//SSA2007EasternAnnual Meeting.
Julian J B,Guido M,Jonathan H,et al.2004.The influence of strong-motion duration on the seismic response of masonry structures[J].Bulletin of Earthquake Engineering,2:1-26.
Kevin M,Bozidar S.Optimal Probabilistic Seismic Demand Models ForTypical Highway Overpass Bridges[C]//12th European Confer-ence on Earthquake Engineering.467.
Krawinkler H,Zohrei M.1983.Cumulative damage in steel structuressubjected to earthquake ground motions[J].ComputStruct,16(1-4):531-541.
Lee T H,Khalid M Mosalam.2006Probabilistic Seismic Evaluation ofReinforced Concrete Structural Components and Systems[R].Pa-cific Earthquake Engineering Research Center,University of Cali-fornia,Berkeley,CA.
Lee VW.2002.Empirical scaling of strong earthquake ground motion-partii:duration of strong motion[J].Journal of Earthquake Technolo-gy,39(4):255-271.
Mander J B,Panthaki F D,Kasalanati A.1994.Low-cycle fatigue be-havior of reinforcing steel[J].J Mater Civil Eng,ASCE,6(4):453-468.
Park Y J,Ang A HS.1985.Mechanistic seismic damage model for rein-forced concrete[J].Journal of Structural Division,ASCE,111(4):722-739.
PEER Strong Ground Motion Database[DB/OL].PEER,2007-05-16.(2007-05-16):[2007.11.12].http://peer.berkeley.edu/NGA.
Sarma S K,Casey B J.1990.Duration of strong motion in earthquake[C]//Proceedings of the9th World Conference on Earthquake En-gineering,Tokyo Japan,10A:174-179.
Shoji Y,Tanii K,Kamiyama M.2005.A study on the duration and am-plitude characteristics of earthquake ground motions[J].Soil Dy-namics and Earthquake Engineering,25:505-512.
Shome N,Cornell C A,Bazzurro P,et al.1998.Earthquakes,recordsand nonlinear responses[J].Earthquake Spectral,14(3):469-500.
Trifunac MD,Brady AG.1975.Astudy on the duration of strong earth-quake ground motion[J].BSSA,65(3):581-626.
Wang G Q,Zhou X Y,Zhang P Z,et al.2002.Characteristics of am-plitude and duration of for near fault strong ground motion from the1999Chi-Chi,Taiwan Earthquake[J].Soil Dynamics and Earth-quake Engineering,22:73-96.
Benjamin J R,Cornell C A.1970.Probability,statistics and decision forcivil engineers[M].New York:McGraw-Hill,Inc.
Bolt B A.1973.Duration of strong ground motion[C]//Proceedings ofthe5th World Conference on Earthquake Engineering,Rome,1:1304-1313.
Chai TH,Romstad K M,Bird S M.1995.Energy-based linear damagemodel for high-intensity seismic loading[J].Structural Engineer-ing,121(5):857-864.
Cornell C A,Jalayer F,Hamburger R O,et al.2002.Probabilistic ba-sis for2000SAC/FEMA steel moment frame guidelines[J].Jour-nal of Structural Engineering,128(4):526-533.
Dobry R,Idriss I M,Ng E.1978.Duration characteristics of horizontalcomponents of strong-motion earthquake records[J].BSSA,68(5):1487-1520.
El-Bahy A,Kunnath S K,Stone W C,et al.1999.Cumulative seismicdamage of circular bridge columns:benchmark and low-cycle fa-tigue tests[J].ACI Sturct J,96(4):633-641.
Harmsen S,Frankel A.2001.Geographical deaggregation of seismic haz-ard in the United States[J].BSSA,91(1):13-26.
Jongwon L,Russell A G.2007.Empirical Strong Motion Duration Rela-tionships for the Central/Eastern US[C]//SSA2007EasternAnnual Meeting.
Julian J B,Guido M,Jonathan H,et al.2004.The influence of strong-motion duration on the seismic response of masonry structures[J].Bulletin of Earthquake Engineering,2:1-26.
Kevin M,Bozidar S.Optimal Probabilistic Seismic Demand Models ForTypical Highway Overpass Bridges[C]//12th European Confer-ence on Earthquake Engineering.467.
Krawinkler H,Zohrei M.1983.Cumulative damage in steel structuressubjected to earthquake ground motions[J].ComputStruct,16(1-4):531-541.
Lee T H,Khalid M Mosalam.2006Probabilistic Seismic Evaluation ofReinforced Concrete Structural Components and Systems[R].Pa-cific Earthquake Engineering Research Center,University of Cali-fornia,Berkeley,CA.
Lee VW.2002.Empirical scaling of strong earthquake ground motion-partii:duration of strong motion[J].Journal of Earthquake Technolo-gy,39(4):255-271.
Mander J B,Panthaki F D,Kasalanati A.1994.Low-cycle fatigue be-havior of reinforcing steel[J].J Mater Civil Eng,ASCE,6(4):453-468.
Park Y J,Ang A HS.1985.Mechanistic seismic damage model for rein-forced concrete[J].Journal of Structural Division,ASCE,111(4):722-739.
PEER Strong Ground Motion Database[DB/OL].PEER,2007-05-16.(2007-05-16):[2007.11.12].http://peer.berkeley.edu/NGA.
Sarma S K,Casey B J.1990.Duration of strong motion in earthquake[C]//Proceedings of the9th World Conference on Earthquake En-gineering,Tokyo Japan,10A:174-179.
Shoji Y,Tanii K,Kamiyama M.2005.A study on the duration and am-plitude characteristics of earthquake ground motions[J].Soil Dy-namics and Earthquake Engineering,25:505-512.
Shome N,Cornell C A,Bazzurro P,et al.1998.Earthquakes,recordsand nonlinear responses[J].Earthquake Spectral,14(3):469-500.
Trifunac MD,Brady AG.1975.Astudy on the duration of strong earth-quake ground motion[J].BSSA,65(3):581-626.
Wang G Q,Zhou X Y,Zhang P Z,et al.2002.Characteristics of am-plitude and duration of for near fault strong ground motion from the1999Chi-Chi,Taiwan Earthquake[J].Soil Dynamics and Earth-quake Engineering,22:73-96.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心