[1] Xu Longjun, Xie Lili,. Bi-normalized response spectra and scalar periodsfor developing uniform seismic design spectra [J]. Journal of Southeast University (English Edition), 2007, 23 (2): 266-271. [doi:10.3969/j.issn.1003-7985.2007.02.023]
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Bi-normalized response spectra and scalar periodsfor developing uniform seismic design spectra(
)
统一抗震设计谱的双规准反应谱和标定周期
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 23
- Issue:
- 2007 2
- Page:
- 266-271
- Research Field:
- Other Disciplines
- Publishing date:
- 2007-06-30
Info
- Title:
- Bi-normalized response spectra and scalar periodsfor developing uniform seismic design spectra
- 统一抗震设计谱的双规准反应谱和标定周期
- Author(s):
- Xu Longjun1, 2, Xie Lili2
-
1Engineering College, Ocean University of China, Qingdao 266100, China
2 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
- Keywords:
- ground motion; normalized response spectrum; bi-normalized response spectra; scalar period
- PACS:
- P315.9
- DOI:
- 10.3969/j.issn.1003-7985.2007.02.023
- Abstract:
- Aiming at the uniform features of acceleration response spectra, two scalar periods—the response spectral predominant period Tp and the smoothed spectral predominant period To are employed to normalize the abscissa of the normalized response spectra(NRS)of ground motions, respectively.Engineering characteristics of 5%-damped NRS, and the bi-normalized response spectra(BNRS)are investigated accounting for the effects of soil condition and fault distance.Nearly 600 horizontal ground motion components during the Chi-Chi earthquake are included in the analysis.It shows that the NRS strongly depends on soil condition and fault distance.However, soil condition and distance have only a slight influence on two kinds of BNRS.Dispersion analysis indicates that such normalization can reduce scatter in the derivation of response spectral shapes.Finally, a parametric analysis of the scalar periods(Tp, To)is performed and then compared with those of previous studies.These special and particular aspects of earthquake response spectra and scalar periods need to be considered in developing earthquake-resistant design criteria.
- 为了考察地震动加速度反应谱的统一性, 用2种标定周期(反应谱卓越周期Tp和平滑化反应谱卓越周期To)分别对传统规准反应谱的横坐标进行规准化.考虑场地条件和断层距的影响, 对集集地震近600水平向分量地震动5%阻尼比的规准反应谱和2种双规准反应谱进行了分析.结果表明场地条件和断层距对规准谱的影响明显, 但对2种双规准谱的影响甚小.离散性分析表明对规准反应谱横坐标的规准化得到的双规准谱具有离散性小的特点.最后, 对标定周期(Tp, To)的分布进行了参数分析并与以往结果进行了比较.地震动反应谱和标定周期的新特性可以为规范设计谱的应用和发展提供参考依据.
References:
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[2] Seed H B, Ugas C, Lysmer J.Site-dependent spectra for earthquake-resistance design[J].Bull Seismol Soc Am, 1976, 66(1):221-243.
[3] Mohsen T, Farzaneh H.Influence of earthquake source parameters and damping on elastic response spectra for Iranian earthquakes[J].Engineering Structures, 2002, 24:933-943.
[4] Rathje E M, Faraj F, Russell S, et al.Empirical relationships for frequency content parameters of earthquake ground motions[J].Earthquake Spectra, 2004, 20(1):119-144.
[5] Xu Longjun, Xie Lili.Bi-normalized response spectral characteristics of the 1999 Chi-Chi earthquake[J].Earthquake Engineering and Engineering Vibration, 2004, 3(2):147-155.
[6] Chopra A K, Chintanapakdee C.Comparing response of SDF systems to near-fault and far-fault earthquake motions in the context of spectral regions[J].Earthquake Engng Struc Dyn, 2001, 30:1769-1789.
[7] Mavroeidis G P, Dong G, Papageorigiou A S.Near-fault ground motions, and the response of elastic and inelastic single-degree-of-freedom(SDOF)systems[J].Earthquake Engng Struc Dyn, 2004, 33:1023-1049.
[8] Xu Longjun, Xie Lili.Site-dependent bi-normalized earthquake acceleration response spectra[J].Journal of Harbin Institute of Technology, 2004, 36(8):1061-1064.(in Chinese)
[9] Lee W H K, Shin T C, Kuo K W, et al.CWB free-field strong-motion data from the 921 Chi-Chi earthquake:processed acceleration files on CD-ROM, strong-motion data series CD-001[C/OL].Seismological Observation Center, Central Weather Bureau, 2001.
Memo
- Memo:
- Biographies: Xu Longjun(1976—), male, doctor, lecturer, xulongjun80@163.com;Xie Lili(1939—), male, professor, academician of Chinese Academy of Engineering.