| Study on comparison between absolute and relative input energy spectra and effects of ductility factor |
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| 作者姓名： | 公茂盛 谢礼立 |
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| 作者单位： | Institute of Engineering Mechanics China Earthquake Administration Harbin 150080 China，Institute of Engineering Mechanics China Earthquake Administration Harbin 150080 China，Harbin Institute of Technology Harbin 150090 China |
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| 基金项目： | Natural Science Foundation of Heilongjiang Province (E0221)，Commonweal Foundation of the Ministry of Science and Technology of China (2001DIB20098). |
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| 摘 要： | Introduction Estimation of an attenuation relationship for strong ground motion parameters has been an interesting research subject in the field of engineering seismology and has played a very important role in seismic safety evaluation, seismic zoning, seismic hazard evaluation of major constructions, etc. At present, the generally used parameters include peak acceleration, peak velocity and elastic response spectrum. Such parameters mentioned above are essentially independent of the duration…
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| 收稿时间： | 17 August 2004 |
| 修稿时间： | 16 July 2005 |
Study on comparison between absolute and relative input energy spectra and effects of ductility factor |
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| GONG Mao-sheng,XIE Li-li.Study on comparison between absolute and relative input energy spectra and effects of ductility factor[J].Acta Seismologica Sinica(English Edition),2005,18(6):717-726. |
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| Authors: | GONG Mao-sheng XIE Li-li |
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| Institution: | 1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
2. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | Based on 266 strong ground motion records, an attenuation relationship was developed for both absolute and rela-tive input energy spectra. The comparison of the two kinds of input energy spectra constructed from the attenuation relationship was made in this paper. The results show that there is little difference between the absolute input en-ergy spectra and relative input energy spectra at the periods of 0.5~1.0 s for elastic systems and at the period of 0.5 s for inelastic systems. The absolute input energy spectra are much larger than relative input energy spectra in very short period range but some less than relative input energy spectra in long period range. It is also found that the ductility factor has a significant effect on both absolute and relative input energy spectra. The absolute input energy spectra increase with the increasing of ductility factor in the period range of less than 0.3 s but decrease in the period range of larger than 0.3 s. The absolute input energy spectra for different ductility factor are almost equivalent at the period about 0.3 s, but for relative input energy spectra, the period is about 0.5 s. The effect of ductility on the relative input energy spectra in the short period range is much larger than that on the absolute input energy spectra, especially on the softer site class. |
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| Keywords: | input energy spectra strong ground motion attenuation relationship ductility factor two-stage regression method |
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