[1]LAI Qinghui,HU Jinjun,LIU Xuan,et al.Analysis of Influencing Factors on the Constant-strength Ductility Spectra based on the Strong Ground Motions[J].Journal of Seismological Research,2019,42(04):594-600.
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Analysis of Influencing Factors on the Constant-strength Ductility Spectra based on the Strong Ground Motions
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 04
Page number:
594-600
Column:
Public date:
2019-12-15
- Title:
- Analysis of Influencing Factors on the Constant-strength Ductility Spectra based on the Strong Ground Motions
- Keywords:
- ground motion parameters; constant-strength ductility spectra; inelastic response; influencing factors
- CLC:
- P315.91
- DOI:
- -
- Abstract:
- To study the effect of different factors on the constant-strength ductility spectra,based on more than 5500 horizontal ground motion data with peak ground acceleration greater than 50 gal,the elastoplastic response of single degree of freedom system(SDOF)is calculated by bilinear model,and the factors affecting the constant-strength ductility spectra are analyzed mainly from the aspects of seismic information parameters and ground motion parameters.First,in the analysis of seismic information parameters,ground motions are grouped according to the epicenter distance and magnitude on the basis of site classification,and the effects of epicenter distance and magnitude on the constant-strength ductility spectra are analyzed.Second,in terms of ground motion parameters,the representative parameters reflecting amplitude,frequency spectrum and duration,such as peak ground velocity(PGV),effective peak acceleration(EPA)and Bolt duration,are analyzed,and their effects on constant-strength ductility spectra are analyzed by grouping them according to the magnitude of PGV,EPA and Bolt duration.The results show that:①In most of the periods,there is a greater difference in the constant-strength ductility spectra of each group,and when the epicenter distance and magnitude are larger in each site,the corresponding ductility spectrum values are larger.②The best grouping effect is PGV,followed by Bolt duration.When grouped according to EPA,the grouping result is the most unsatisfactory.Therefore,when establishing constant-strength ductility spectra based on the strong ground motion records,it is necessary to consider the comprehensive effects of epicenter distance,magnitude,PGV and other parameters.
- References:
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Last Update:
2019-12-15