Study on Collapse of Compression Mechanism in RC member due to Corrosion Cracks
| Project/Area Number |
24560593
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Railway Technical Research Institute |
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Principal Investigator |
OYADO MICHIAKI 公益財団法人鉄道総合技術研究所, その他部局等, 研究員 (10425910)
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| Co-Investigator(Kenkyū-buntansha) |
KANAKUBO Toshiyuki 筑波大学, システム情報工学研究科, 准教授 (90261784)
YASOJIMA Akira 筑波大学, システム情報工学研究科, 助教 (80437574)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | コンクリート構造 / 腐食 / 強度 / 変形能 |
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| Outline of Final Research Achievements |
This study is to clarify the phenomena of collapse of the compression-bearing mechanism due to bar corrosion. In this study, the relationship between the mechanical factor and the material factor has been investigated. According to the experimental result, it was obtained that the collapse of the compression-bearing mechanism due to bar corrosion could lead to the decrease of the bending strength and the deformation capacity. As well as the long-term exposed specimen, the artificially damaged specimens could simulate the phenomena. It was also obtained that the spatial motions of the concrete surface of the specimens could be traced using the 3D photo analysis method. Following these informations, it was clarified that the newly developed analysis model could express the buckling motion of reinforcing bar, and also obtained that the conventional design model of concrete could be applied to express the moment-curvature relationship of the tested beam specimens.
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Report
(4 results)
Research Products
(13 results)
