1996 Fiscal Year Final Research Report Summary
Engineering Determination of Scenario Earthquakes and Development of Seismic Hazard GIS
| Project/Area Number |
07555635
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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 | 試験 |
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| Research Field |
構造工学・地震工学
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
KAMEDA Hiroyuki Kyoto University, Disaster Prevention Research Institute, Professor, 防災研究所, 教授 (80025949)
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| Co-Investigator(Kenkyū-buntansha) |
USUI Teruko Nara University, Faculty of Letters, Associate Professor, 文学部, 助教授 (30068829)
IWAI Satoshi Kyoto University, Disaster Prevention Research Institute, Research Associate, 防災研究所, 助手 (60184850)
SUGITO Masata Gifu University, Faculty of Engineering, Professor, 工学部, 助教授 (60115863)
OKUMURA Toshihiko Shimizu Corporation, Technical Research Institute, Research Engineer, 技術研究所, 研究員
ISHIKAWA Yutaka Shimizu Corporation, Technical Research Institute, Senior Research Engineer, 技術研究所, 主任研究員
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| Project Period (FY) |
1995 – 1996
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| Keywords | probabilistic scenario earthquakes / contribution factor of seismic sources / seismic hazard / risk-consistent earthquake ground motions / seismic hazard GIS / hazard map |
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| Research Abstract |
The results of this study may be summarized as follows.
(1) It was proved that the concept of "probabilistic scenario earthquakes" can be applied to the assessment of "low frequency-high impact disasters." The concept is useful in that it constitutes a straightforward bridge between scenario earthquakes and probabilistic seismic hazard analysis which have been discussed in entirely separate contexts. The usefulness of probabilistic scenario earthquakes have been demonstrated through case studies for Kobe as linked with the occurrence of the Hyogoken-nanbu Earthquake as well as other major Japanese cities.
(2) A simple and rigorous method was developed for evaluation of nonlinear soil amplification of earthquake ground motions. The subject is important in microzonation for regional disaster mitigation planning. The method proposed herein consists of the conversion factor between the basement motion and the free surface motion.A frequency dependent equivalent linearization technique was used for the analysis of nonlinear ground response.
(3) Usefulness of the geographic information systems (GIS) was demonstrated for assessment of the probabilistic scenario earthquakes and risk-consistent earthquake ground motions. Hazard maps using probabilistic scenario earthquakes were proposed, and a case study has been performed for a region in western Japan.
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