1993 Fiscal Year Final Research Report Summary
Stability evaluation of soil structure for earthquake taking acceleration time history into consideration
| Project/Area Number |
04452225
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
基礎・土質工学
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| Research Institution | Nagoya University |
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Principal Investigator |
MATSUO Minoru Nagoya Univ., Geotechnical and Environmental Eng., Professor, 工学部, 教授 (40025937)
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| Co-Investigator(Kenkyū-buntansha) |
KODAKA Takeshi Nagoya Univ., Civil Eng., Research Assoc., 工学部, 助手 (00252271)
NAKANO Masaki Nagoya Univ., Geotechnical and Environmental Eng., Research Assoc., 工学部, 助手 (00252263)
OHTSUKA Satoru Nagoya Univ., Geotechnical and Environmental Eng., Assoc.Professor, 工学部, 助教授 (40194203)
ASAOKA Akira Nagoya Univ., Civil Eng., Professor, 工学部, 教授 (50093175)
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| Project Period (FY) |
1992 – 1993
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| Keywords | Earthquake / Dynamic Load / Embankment / Stability / Residual Deformation |
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| Research Abstract |
This study focuses on two topics. One is stability evaluation of soil structure for dynamic loading as earthquake. The other is evaluation on residual deformation of soil structure caused by dynamic loading.
The seismic coefficient method has been employed to estimate a stability of soil structure for a dynamic load the direction and the magnitude of which vary in time. But, it can not consider an acceleration time history of an earthquake and dynamic properties of both soil structure and ground. This study presents a new analytical method to estimate a stability of soil structure for a dynamic loading as an earthquake taking acceleration time history into account. The applicability of this method to design is discussed.
On the other hand, rigid plastic dynamic deformation analysis is developed to evaluate a residual deformation by an earthquake loading. In a rigid plastic assumption displacement is generally in determinate. It is, however, rationally determinate in concern with a prescribed acceleration on the boundary. Typical numerical examples are shown for embankment problems under earthquakes.
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