2022 Fiscal Year Final Research Report
Effective application and structural performance evaluation of inclined headed studs for reinforced concrete column-steel beam structures
| Project/Area Number |
20K04784
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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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| Review Section |
Basic Section 23010:Building structures and materials-related
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| Research Institution | Hiroshima Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 鋼コンクリート合成構造 / 柱RC梁S構造 / ずれ止め / 頭付きスタッド / 傾斜スタッド / 柱梁接合部 / 合成梁 / 終局耐力 |
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| Outline of Final Research Achievements |
Inclined headed studs have higher shear stiffness and strength. I proposed an appropriate arrangement and direction of inclined headed studs for the composite beam and beam-column connection of mixed structures composed reinforced concrete columns and steel beams. In this research, we confirmed the structural performance of mixed structures composed reinforced concrete columns and steel beams with inclined stud through the structural test.
From the test results, it was shown that the composite beam with inclined headed studs clearly improves strength. In addition, I proposed an evaluation method of the yield strength and the ultimate strength of composite beam. However, the effect of inclined headed studs for beam-column connection was limited. I proposed an evaluation method of the ultimate strength of beam-column connection.
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| Free Research Field |
建築構造
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| Academic Significance and Societal Importance of the Research Achievements |
鉄骨とコンクリートで構成される建築構造の構造部材に、せん断剛性とせん断強度が大きい傾斜スタッドを用いれば、鉄骨とコンクリートを容易に剛結でき、鉄骨とコンクリートを組み合わせて用いることの合成効果・相乗効果を設計に反映できる合理的な構造の建物を造ることができる。「頭付きスタッドを傾斜させる」という簡単な改良だけで、頭付きスタッドの施工本数の軽減による省力効率化が図れ、建築物の生産性が向上する。さらに、鉄骨とコンクリートを組み合わせた構造体は建築・土木に関わらず多様にあり、本研究で得られた成果は鉄骨とコンクリートを剛結する接合工法として幅広い展開が期待できる。
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