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2023 年度 実施状況報告書

付着強度の低い超高強度鉄筋を主筋に用いたレジリエントなRC部材のせん断性状と評価

研究課題

研究課題/領域番号 22KF0315
配分区分基金
研究機関熊本大学

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)

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
研究期間 (年度) 2023-03-08 – 2025-03-31
キーワードShear capacity / Self-centering columns / Strong earthquakes / Push-over test
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.

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.

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.

  • 研究成果

    (1件)

すべて 2023

すべて 雑誌論文 (1件) (うち査読あり 1件)

  • [雑誌論文] Shear strength behavior of high-strength fly ash concrete beams with low-bond reinforcement2023

    • 著者名/発表者名
      Junhua Wang, Y. Sun
    • 雑誌名

      Structures

      巻: 54 ページ: 1756-1771

    • DOI

      10.1016/j.istruc.2023.05.095

    • 査読あり

URL: 

公開日: 2024-12-25  

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