2013 Fiscal Year Final Research Report
A study on upgrading procedure of strengthening performance for RC structure by means of submerged FRP plate bonding method
| Project/Area Number |
24760356
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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
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| Research Institution | Muroran Institute of Technology |
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Principal Investigator |
KURIHASHI Yusuke 室蘭工業大学, 工学(系)研究科(研究院), 講師 (30414189)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 水中コンクリート構造物 / 連続繊維 / 接着補強 / 曲げ耐力向上 / 剥離破壊 |
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| Research Abstract |
In this study, in order to improve the bonding performance of submerged Pre-casted Fiber Reinforced Polymer plate (PCa-FRP plate) bonding method, a solution of arranging the shear keys to concrete surface of RC beam was proposed. And then, the static four-point loading tests of RC beams strengthened with submerged PCa-FRP plate bonding method were conducted. From this study, following results were obtained: 1) flexural load-carrying capacity of submerged strengthened RC beam can be improved by arranging shear keys with adequate intervals; 2) when the shear keys setting intervals are comparably small, PCa-FRP plate may be easy to debond from concrete surface because many cracks are occurred at bond layer near shear keys; and the adequate shear keys interval is 60 ~ 90 % of the effective depth of RC beam.
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