2016 Fiscal Year Final Research Report
Stress transfer mechanism of RC beams with large web-opening, and proposal of shear capacity evaluation and reinforcing arrangement design method around web-opening
| Project/Area Number |
25420574
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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 |
Building structures/Materials
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| Research Institution | University of Fukui |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | 鉄筋コンクリート構造 / 開孔梁 / 人通孔 / 開孔周囲補強筋 / 終局せん断耐力 / 応力伝達メカニズム |
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| Outline of Final Research Achievements |
The shear force transfer mechanism around the web-opening was experimentally discussed, and the shear force transfer model was proposed. The diagonal bars form a truss structure and carry a part of shear force independently. The truss and arch mechanism of two stage beams upper and lower side of the web-opening carry the other part of shear force. The stirrups on the side of the opening balance with the strut of the arch mechanism.
According to the shear capacity formula based on the proposed shear force transfer model, the calculated shear capacity corresponds to the experimental results with almost constant safety margin. The postulated formula in this study is found to be able to evaluate the shear capacity of RC beams with large web-opening accurately.
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| Free Research Field |
建築構造・材料
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