2014 Fiscal Year Final Research Report
Structural health monitoring of bridges with high density smart sensor array
| Project/Area Number |
25870025
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
Information network
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| Research Institution | Kitami Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 構造ヘルスモニタリング / スマートセンサー |
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| Outline of Final Research Achievements |
A vibration based Structural Health Monitoring (SHM) is expected to be a key technique to improve structural safety. A smart sensor which is an electronic device using MEMS (Micro Electro Mechanical Systems) has a potential to enable efficient vibration measurement because of its wireless communication function and on-board processing ability.
In this study, vibration measurement experiments on real bridges were performed to establish the working knowledge of smart sensor system and the damage identification method which was proposed in this study. The experiments were performed on a damaged pedestrian bridge. From experimental results, mode shapes slightly changed through repair work though its natural frequencies did not change. The largest value of a proposed damage index was obtained at the sensor near the damaged point.
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| Free Research Field |
構造工学
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