2022 Fiscal Year Final Research Report
Developement of post-tensioned energy dissipating precast concrete frame structures with prestressing force variation suppression devices
| Project/Area Number |
20K04786
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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 | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
北野 敦則 前橋工科大学, 工学部, 教授 (80250471)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 建築構造・材料 / 構造工学・地震工学 / 制震 / 耐震 / 損傷制御 |
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| Outline of Final Research Achievements |
A prestressing force variation suppression device, a beam-end damper, and cruciform beam-column joint test specimens are designed and fabricated for the practical application of a new unbonded post-tensioned precast concrete damage controlled structure. The effectiveness of the proposed structure is clarified through elemental and partial frame tests and numerical calculations using an analytical model, comprehensively examining the effectiveness of the prestressing force variation suppression device, the energy absorption effect of the beam-end damper, the extent of damage near the beam-column joint, the hysteresis characteristics, the bearing capacity, and the deformation properties at the beam-column interfaces.
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| Free Research Field |
建築構造
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で提案するアンボンドPCaPC構造では、緊張力変動抑制装置と梁端ダンパーの性能、およびPC鋼材の緊張力を調節することによって、PC鋼材を降伏させずに、かつ損傷を最小限に抑えつつ、復元性能、エネルギー吸収性能および耐力の向上が期待できる。また本研究成果によれば、将来の解体を容易にし部材レベルでの取替えやリユースにも対応した新たな建築物像も提示でき、提案構造の実用化および耐震設計に資する情報の提示だけでなく、実社会における普及・発展を経て、解体後の活用も視野に入れた部材の供給体制の整備、主要部材の規格化にもつながり、環境負荷に配慮した循環型建築物の実現に貢献できる。
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