| Project/Area Number |
17K14761
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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 |
Building structures/Materials
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 鋼構造 / 制振構造 / 合成梁 / ガセットプレート / 数値解析 / 建築構造材料 / 鋼構造建物 / 複曲率曲げ |
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| Outline of Final Research Achievements |
The purpose of this study is to clarify the elasto-plastic behavior of composite beams subjected to double-curvature bending and axial force from loading experiments and numerical analysis. Moreover, based on these, it is to contribute to the establishment of a rational evaluation method of the main structures behavior in steel structure with damper.
(1) With or without of concrete slabs as a parameter, loading tests were carried out on reduced-scale subassemblies with damper. (2) Considerations were carried out using an analytical model composed of multi-spring elements and beam elements. The analytical model reproduced the tests with high accuracy, and summarized the information that contributes to the establishment of the evaluation method. (3) The effective width of concrete slab was examined by finite element analysis. From this, it was confirmed that the effective width of concrete slab is not affected by the gusset plate, stiffness of stud connectors, and beam axial force.
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| Academic Significance and Societal Importance of the Research Achievements |
実施した載荷実験と数値解析は、複曲率曲げと軸力を受ける合成梁を含む主架構であり、このような研究は僅少であることから、今後の鋼構造制振建物を設計する際に有用な情報となる。実施した実験と解析検討から、ガセットプレートが取付く接合部でのコンクリートスラブの応力・歪の伝達機構や、最大耐力を決定づける要因など、評価法を確立するために有用な情報を多数確認することができた。また、解析モデルは実務でよく使用されるマルチスプリング要素と線材要素で構成されており、応力・歪挙動とそれらの伝達を比較的容易に把握することができ、設計に有用である。
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