| Project/Area Number |
13555133
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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 | 展開研究 |
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| Research Field |
構造工学・地震工学
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| Research Institution | OKAYAMA UNIVERSITY |
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Principal Investigator |
TAKEMIYA Hirokazu Okayama University, Environmental and Civil Eng., Professor, 環境理工学部, 教授 (10026156)
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| Co-Investigator(Kenkyū-buntansha) |
HOSOTANI Kazuyoshi Aisawa Coropration, Research Institute, Construction Technique Div. Senior Engineer, 術研究所・施工技術研究室, 主任研究員
芦谷 公稔 (財)鉄道総合研究所, 技術開発事業本部・環境防災技術開発推進部, 主任技師(研究職)
HANAMURA Tetsuya Okayama University, Environmental and Civil Eng., Professor, 環境理工学部, 教授 (40325080)
ASHIYA Kiminori Japan Railway Research Institute, Environmental Disaster prevention Div. Senior Engineer
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥8,100,000 (Direct Cost: ¥8,100,000)
Fiscal Year 2002: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2001: ¥5,500,000 (Direct Cost: ¥5,500,000)
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| Keywords | Couter vibration measure / Tire fill-in WIB / Honeycomb WIB / Wave impeding / Field expreriment / Field measurement / Wave dispersion / Vibration level |
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| Research Abstract |
This study aimed first at revealing the vibration transmission mechanism from the train to nearby ground, and then at developing effective vibration counter measure called honeycomb WIB with tire fill-in based on the former knowledge. The following works have been conducted. :
(1) Development of the computer simulation system for predicting the vibrations induced by train and traffic
The dynamic analysis for a track and ground system is investigated with due consideration of the moving load effect. The 2.5 dimensional solution method is taken for the effective and efficient procedure. The fundamental design formula of a honeycomb wave impeding barrier (WIB) is developed based on the knowledge of the wave field.
(2) Field measurements
From the vibration measurement along a train track, the vibration transmission from train track through the ground was observed. The theoretical interpretation is made based on the data. The structural borne vibration and the ground borne vibration are then detected in comparison with the structural natural frequencies and the wave dispersion characteristic of the ground at site.
(3) Field experiment
The dynamics of the tire fill-in WIB are investigated by the impact loading and harmonic loading. The vibration reduction of this measure is evaluated when it is constructed in the vicinity of a pile foundation. The results are also compared with the computer simulation.
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