2013 Fiscal Year Final Research Report
Study on Safety Technology for Impact and Overturning of Large Scale Self-standing Cylindrical Structures at the Seismic Events
| Project/Area Number |
22360095
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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 |
Dynamics/Control
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
ITO TOMOHIRO 大阪府立大学, 工学(系)研究科(研究院), 教授 (60347507)
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| Co-Investigator(Kenkyū-buntansha) |
SHINTANI Atsuhiko 大阪府立大学, 大学院工学研究科, 准教授 (90295725)
NAKAGAWA Chihiro 大阪府立大学, 大学院工学研究科, 助教 (70582336)
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Keywords | 大型自立円筒構造 / 地震応答 / すべり変位 / ロッキング / 2重円筒構造 / 高粘性流体 / ジャイロシステム / 制振 |
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| Research Abstract |
In this study, in order to suppress excessive sliding motion and overturning of the large scale self-standing cylindrical structures at the seismic events, we proposed simple and realistic damping devices utilizing coaxial circular cylinders with high viscous liquid and gyro system. Simplified test model was fabricated and shaking table tests were conducted. Effects of these damping devices on suppressing sliding and rocking motions were investigated experimentally and analytically.
As a result, it was found that the proposed sliding suppression device is very effective, but some optimization is necessary in order to reducing response acceleration. Furthermore, the experimental and analytical studies clarified that proposed rocking suppression device is very effective in reducing rocking motion.
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