2005 Fiscal Year Final Research Report Summary
Estimation and Evaluation of Torsional Earthquake Response of Asymmetric Buildings
| Project/Area Number |
15360292
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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 |
Building structures/materials
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| Research Institution | The University of Tokyo |
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Principal Investigator |
NAKANO Yoshiaki The University of Tokyo, Institute of Industrial Science, Professor, 生産技術研究所, 教授 (10212094)
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| Co-Investigator(Kenkyū-buntansha) |
SANADA Yasushi The University of Tokyo, Earthquake Research Institute, Research Associate, 地震研究所, 助手 (80334358)
TAKAHASHI Noriyuki The University of Tokyo, Institute of Industrial Science, Research Assocate, 生産技術研究所, 助手 (60401270)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Reinforced Concrete Structure / Seismic Strengthen / Torsional Response / Stiffness Eccentricity / Strength Eccentricity / Static Loading Test / Shaking Table Test / Equivalent Mass Ratio |
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| Research Abstract |
In this research, the experimental and analytical studies on the following contents have made.
(1) First, the strength eccentricity of asymmetric building structures was focused as the parameter for shaking table test. According to the test result, it is revealed that the strength eccentricity significantly affects the failure mode and dynamic behavior of building.
(2) Considering results from the preliminary studies above, an existing building is modeled considering strength eccentricity as well as stiffness eccentricity, and the torsional response of the model building is simulated through a simplified procedure, which is based on the capacity spectrum method. To verify the proposed procedure, the response of an equivalent SDOF system is computed and compared with results obtained through MDOF system.
(3) The procedure of estimating the torsional earthquake response of frames with eccentricity is proposed, and key issues on seismic design for buildings concerned in this study is discussed.
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