| 研究課題/領域番号 |
22KF0315
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| 補助金の研究課題番号 |
22F22357 (2022)
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 基金 (2023)
補助金 (2022) |
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| 応募区分 | 外国 |
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| 審査区分 |
小区分23010:建築構造および材料関連
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| 研究機関 | 熊本大学 |
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研究代表者 |
蔡 高創 熊本大学, 国際先端科学技術研究機構, IROAST准教授 (50838042)
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| 研究分担者 |
WANG JUNHUA 熊本大学, 国際先端科学技術研究機構, 外国人特別研究員
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| 研究期間 (年度) |
2023-03-08 – 2025-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
2,300千円 (直接経費: 2,300千円)
2024年度: 100千円 (直接経費: 100千円)
2023年度: 1,000千円 (直接経費: 1,000千円)
2022年度: 1,200千円 (直接経費: 1,200千円)
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| キーワード | Shear capacity / Self-centering columns / Strong earthquakes / Push-over test |
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| 研究開始時の研究の概要 |
The research aims to understand the influence of the bond-slip of longitudinal rebars on the shear behavior of RC members and to propose a shear degradation model of the concrete members with LBHSRs to improve the design of RC frames with LBHSRs, by test and numerical studies. The study is meant to analyze further seismic vulnerability analysis of the structures with the proposed elements.
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| 研究実績の概要 |
A complete literature review was completed, the traditional shear theoretical calculation model was revised, and an attempt was made to verify the object column of this study.The shear strength carried by concrete Vc degrades along with the development of shear cracks, therefore, the structures designed following the nominal shear strength possibly failed in immature shear. Due to larger deformability, the RC column with LBHSRs had a bigger probability of shear failure at the large deformation stage compared to the normal RC columns.Although many researchers studied the degraded model of shear strength of normal RC columns, the focus of the study is to consider the steel-bond slip of longitudinal rebars.As we reported in previous studies, the relationship between shear stress at flexural crack section and bond strength of longitudinal reinforcement is built and shear stress was considered linearly proportional to the bond strength,implying that the shear behavior is influenced by the bond strength of the rebars.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
The production of the experimental samples (columns) has also been completed and will be loaded next month.
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| 今後の研究の推進方策 |
This research project will end in November 30. Before that, all the focus of the laboratory is to carry out this research. It is expected that the experimental part will be completed in July, and all theoretical analysis and research background have been completed. Data analysis and supplement to the paper will be completed in August.Therefore，one paper will be submitted in early September. The second paper will be submitted in early November to show the results of finite element analysis.
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