| Theoretical research on intensity envelope function of strong ground motion |
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| 作者姓名： | 金星 瘳振鹏 |
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| 作者单位： | Institute of Engineering Mechanics，State Seismological Bureau，Harbin 150080，China |
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| 摘 要： | （金星，瘳振鹏）Ｔｈｅｏｒｅｔｉｃａｌｒｅｓｅａｒｃｈｏｎｉｎｔｅｎｓｉｔｙｅｎｖｅｌｏｐｅｆｕｎｃｔｉｏｎｏｆｓｔｒｏｎｇｇｒｏｕｎｄｍｏｔｉｏｎ￥ＸｉｎｇＪＩＮａｎｄＺｈｅｎ－ＰｅｎｇＬＩＡＯ（ＩｎｓｔｉｔｕｔｅｏｆＥｎｇｉｎｅｅｒｉｎｇＭｅｃｈ...
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| 收稿时间： | 16 April 1993 |
| 修稿时间： | 2 January 1994 |
Theoretical research on intensity envelope function of strong ground motion |
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| Xing Jin and Zhen-Peng Liao.Theoretical research on intensity envelope function of strong ground motion[J].Acta Seismologica Sinica(English Edition),1994,7(4):637-644. |
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| Authors: | Xing Jin and Zhen-Peng Liao |
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| Institution: | (1) Institute of Engineering Mechanics, State Seismological Bureau, 150080 Harbin, China |
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| Abstract: | After the time history of seismic motion is represented by superposition of a series of narrow frequency band wave groups,
we obtain a general relation between wave group arrival time and derivative of phase spectra in the paper. On the basis of
the relation, frequency number distribution function of wave group arrival time is completely equivalent to that of phase
difference spectra. Under the assumption that phase angles of seismic motion obey uniform distribution ranged from 0 to −2π,
a quantitative relation between intensity envelope function of seismic motion and energy distribution function with wave group
arrival time has been derived in this paper. The relation illuminates inner links among Fourier amplitude spectra and derivative
of phase spectra and intensity envelope function. Some examples given by the paper support the conclusions mentioned above.
The project is sponsored by the Chinese Joint Seismological Science Foundation. |
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| Keywords: | intensity envelope function phase difference spectra wave group arrival time distribution function |
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