1997 Fiscal Year Final Research Report Summary
Role of initial stress states in the numerical simulation of subsoil-structure interaction during earthquakes
| Project/Area Number |
08455220
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Kanazawa University |
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Principal Investigator |
OHTA Hideki Kanazawa University, Department of Civil Eigineering, Professor, 工学部, 教授 (80026187)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAJIMA Masakatsu Kanazawa University, Department of Civil Eigineering, Associate Professor, 工学部, 助教授 (70143881)
KITAURA Masaru Kanazawa University, Department of Civil Eigineering, Professor, 工学部, 教授 (70026269)
DEMURA Yoshinori Ishikawa National College of Technology, Department of Civil Engineering, Profes, 教授 (90042928)
IIZUKA Atsushi Kobe University, Department of Civil Engineering, Associate Professor, 工学部, 助教授 (40184361)
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| Project Period (FY) |
1996 – 1997
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| Keywords | constitutive model / numerical analysis / initial stress state / soil-structure interaction / soil / water coupled analysis / deformation analysis / dynamic analysis / earthquake engineering |
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| Research Abstract |
A series of numerical simulations of the subsoil-structure interaction observed at a few sites during the Kobe earthquake were successfully carried resulting in the initial stress states before the earthquake, behavior during the earthquake and the time dependent behavior after the earthquake of the subsoil-structure system. These results were compared with the data obtained from the in-situ and laboratory tests on the undisturbed samples taken from the sites. The importance of the initial stress states in the ground is emphasized in the numerical analysis designed based on the constitutive model developed by the head investigator. The degree of influence of the initial stress states in the grounds on the numerical results were quantitatively estimated making it possible to systematically combine the static and dynamic analyzes which have been separately developed in the past history of static and dynamic research fields.
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