[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]

Copy

Bi-normalized response spectra and scalar periodsfor developing uniform seismic design spectra()

Share：

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

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 T_p and the smoothed spectral predominant period T_o 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(T_p, T_o)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.

References:

[1] Chopra A K.Dynamics of structures:theory and application to earthquake engineering [M].2nd ed.Upper Saddle River, NJ:Prentice-Hall, 2001.
[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.

Common functions