| Variation of earthquake ground motionwith depth |
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| 作者姓名： | 胡进军 谢礼立 |
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| 作者单位： | Institute of Engineering Mechanics，China Earthquake Administration，Institute of Engineering Mechanics，China Earthquake Administration Harbin 150080，China，Harbin 150080，China，School of Civil Engineering and Architecture，Harbin Institute of Technology，Harbin 150090，China |
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| 基金项目： | Natural Science Foundationof Heilongjiang Province (E0221). |
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| 摘 要： | Introduction The 21st century is the time for the exploitation and utilization of underground spaces. It is astrategic way to defeat the severe challenge that human are now confronting with, such as the lackof land, contamination of environment, traffic jam, waste of sources, and so on. The exploitationand utilization of underground space has become a global tendency, and a significant sign inevaluating the speed of modernization of cities. Facing the challenge, it is significantly necess…
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| 收稿时间： | 10 November 2003 |
| 修稿时间： | 17 September 2004 |
Variation of earthquake ground motion with depth |
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| Hu Jin-jun and Xie Li-li.Variation of earthquake ground motionwith depth[J].Acta Seismologica Sinica(English Edition),2005,18(1):72-81. |
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| Authors: | Hu Jin-jun and 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;School of Civil Engineering and Architecture, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | The variation of ground motion with depth is investigated in this paper, which is essential in determining the seis- mic design ground motion for embedded structures and pipelines. Firstly the earthquake ground motion on surface and in subsoil recorded by Hosokura Mine array of Japan and six California Strong Motion Instrumentation Pro- gram geotechnical arrays of the United States from about fifty moderate and strong earthquakes are described. Then the arrays were classified into three different categories according to their site conditions. Finally the varia- tion law of ground and sub-ground motion with depth is established as a result of a nonlinear regression analysis of the above-mentioned data. Through comparing the features in different sites, it is concluded that, in general, the amplitude (acceleration, velocity and displacement) of ground motion are decreasing with depth and the attenua- tion rate is higher in the shallow strata than that in deeper ones. |
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| Keywords: | earthquake sub-ground motion amplitude ratio nonlinear regression analysis |
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