2018 Fiscal Year Final Research Report
Monitoring and Vibration Control by TMD of Shinkansen PRC Bridge with Large Vibration
Project/Area Number |
16H06097
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Single-year Grants |
Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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Research Institution | The University of Tokyo |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Keywords | 新幹線PRC桁 / 大振幅振動 / 制御 / MTMD / 最適化 / 非線形有限要素法 |
Outline of Final Research Achievements |
A large-amplitude vibration was confirmed on the Shinkansen PRC girders in Japan. The purpose of this research is to clarify the mechanism of the large amplitude vibration, to grasp the structural characteristics by monitoring the actual bridge, and to propose the vibration control method specifically through measurement and analysis. Since the existing measures require large-scale, high-cost reinforcement work, we proposed a vibration control technique using inexpensive and compact TMD, and showed its optimal arrangement and parameters by nonlinear finite element method. By this research result, we could propose an inexpensive and effective vibration control method.
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Free Research Field |
レーザー計測,振動モニタリング,リアルタイム空間解析工学
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Academic Significance and Societal Importance of the Research Achievements |
日本が誇る高速鉄道である新幹線の安全性を確保するには,新幹線の車両本体のみならず,それを支えるインフラの状態を適切に保つ必要がある.鉄道インフラの中でも特に維持管理が重要となる橋梁の振動特性についてモニタリングを通して明らかにし,さらに安価で現実的な振動制御方法について提案できたことには意義があると考える.提案したマルチTMDを使った方法では,新幹線の桁下空間に大規模な剛性向上のための柱などを作ることなく,桁上に工場で製作した製品を設置するだけでよいことから,設置コストや時間などを大幅に短縮できると考える.
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