2011 Fiscal Year Final Research Report
SEISMIC SAFETY EVALUETIONS OF ISOLATED VIADUCT BY FOCUSING ON THE CHANGE OF VIBRATING MODES
| Project/Area Number |
21686042
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Osaka City University |
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Principal Investigator |
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| Research Collaborator |
KANOU Masato JIPテクノサイエンス(株)
YOSHIDA Masahiko 川金コア・テック(株)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 動的応答 / 高架橋 / 免震 / 制振 / 安全性評価 |
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| Research Abstract |
By focusing on the changes in the vibration modes of the system, which arises due to knocking-off of component members, application effects of knock-off member as a designed trigger are investigated through loading tests and numerical simulations. Main conclusions are the followings ; 3 types of the knocking-off members, like a cantilever, a beam and a bar/bolt, with the slit processed at adequate part of them, can be used as knock-off members. The knock off loads of them against dynamic and cyclic loading fluctuate rather than those against static and monotonic loading, but the knock off of the designated members can enhance the seismic safety of the viaduct providing a smooth shift of the vibrating modes of the system into the isolated condition.
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