| Project/Area Number |
16K06580
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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 | Akita Prefectural University |
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Principal Investigator |
Kanno Hideto 秋田県立大学, システム科学技術学部, 准教授 (20336449)
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| Research Collaborator |
HAYASHI keisuke
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 鉄筋コンクリート造柱 / 軸鉄筋 / アンボンド / エネルギー吸収 / 力学的性能 / 鉄筋コンクリート構造 |
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| Outline of Final Research Achievements |
In this study, a reinforced concrete column in which low-yield-steel bars is incorporated as a damper in the axial direction, is proposed. As an example of its application, the seismic response reduction effect for the soft-first-stories frame that is superior in overall flexural deformation is discussed. As a result, it is found that by incorporating a damper in the axial direction, the overall flexural deformation of the frame is appropriately suppressed, and it is possible to reduce the seismic response in both axial deformation and horizontal deformation. Nevertheless, it is also found that when the amount of dampers is excessively increased, its seismic response behavior and fracture type is varied, and the function as a damper is lost because of reduction of axial deformation. A simple method to design the amount of dampers based on the results of static incremental analysis of the bared frame is also proposed in this research.
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| Academic Significance and Societal Importance of the Research Achievements |
都心部などで多くみられる形状がスレンダーな高層建物は、地震時に建物全体がしなる全体曲げ変形挙動が卓越する場合が多い。本研究成果はこのような建物の耐震性能の向上に寄与しうるものと考える。本研究では、特に日本国内においては「避けるべき構造」と認識されている一方で、機能面では社会的ニーズの高いピロティ構造への適用に着目した。本研究により、柱軸方向にダンパーを設置して、ピロティ架構の建築計画的な利便性を損なわずに、耐震性能を向上させることが期待できる知見を得た。
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