2003 Fiscal Year Final Research Report Summary
Improved estimation of building damage due to an earthquake based on vulnerability functions considering regional seismic capacity difference
| Project/Area Number |
14380189
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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 |
社会システム工学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KOHIYAMA Masayuki The University of Tokyo, Institute of Industrial Science, Research Associate, 生産技術研究所, 助手 (10333577)
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| Co-Investigator(Kenkyū-buntansha) |
MEGURO Kimiro The University of Tokyo, Institute of Industrial Science, Associate Professor, 生産技術研究所, 助教授 (40222343)
YAMAGUCHI Naoya National Research Institute for Earth Science and Disaster Prevention, Earthquake Disaster Mitigation Research Center, Researcher, 地震防災フロンティア研究センター, 研究員 (50323647)
WAKAMATSU Kazue The Association for Earthquake Disaster Prevention, Researcher, 研究員 (10132789)
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| Project Period (FY) |
2002 – 2003
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| Keywords | earthquake damage / vulnerability function / damage estimation / wooden structure / seismic diagnosis / response spectrum |
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| Research Abstract |
In order to improve estimation accuracy of building damage due to an earthquake, the regional difference of seismic capacity of wooden houses in Japan is revealed based on the seismic diagnosis data.
Based on the above result, the new vulnerability functions of wooden houses, which use the results of seismic diagnosis and an acceleration response spectrum, are proposed. They employ a probability density function of seismic performance indices of wooden houses, which are separated into an index of the resistance force and other indices regarding the degradation of resistance force. The input seismic motion is evaluated based on an acceleration response spectrum and natural periods determined by the indices of resistance force.
The application results to the 1995 Hyogo-ken Nanbu earthquake are compared with the damage statistics at the five sites, which have seismic records. Though the proposed vulnerability functions are not based on the damage statistics, the estimated damage ratios coincide fairly well with the actual damage surveyed by local governments.
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Research Products
(8 results)
