2018 Fiscal Year Final Research Report
Assessment of residual load bearing capacity of anchorage zone between steel and concrete under dynamic and cyclic loading
| Project/Area Number |
16K18142
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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 |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Aichi Institute of Technology |
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Principal Investigator |
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| Research Collaborator |
SUZUKI moriaki
SHIMAGUCHI yoshiyuki
KONDOU toshiki
IKEDA asuka
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | あと施工アンカーボルト / 孔あき鋼板ジベル / 残存耐荷性能 / 繰り返し載荷 / FEM |
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| Outline of Final Research Achievements |
In this paper, we conduct experimental study on load-bearing capacity of anchorage zone under dynamic cyclic load and numerical simulations with 3D FEM to a complex phenomenon such as corn failure and bond failure. The following conclusions are deduced from this study.
First, it is confirmed that pullout load depends on cyclic load, anchor bolt's displacement and loading direction. Moreover, It is found that it is potential application in non contact air coupled ultrasonic testing for failure condition of anchorage zone. Secondarily, resin bond characteristic between bolt and concrete under the dynamic loading were different from the cases of the quasi-static loading. Lastly, we proposed mechanical model based on hydrostatic pressure. Consequently, failure condition of anchorage zone under various boundary condition could be simulated well using our proposed mechanical model.
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| Free Research Field |
構造工学、構造解析学
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| Academic Significance and Societal Importance of the Research Achievements |
高度経済成長期に建設された土木構造物を合理的に維持管理し，長寿命化に向けた取り組みが今後増加していくことが予測される。その中で，目視点検が困難な接合部も含めて実構造物の現有性能を定量的に評価することは非常に重要である。
そのため，本研究で実施した鋼・コンクリート接合部の残存耐荷性能に関する実験的研究や定量的耐荷性能評価手法の確立に向けた解析的研究による成果は，土木構造物の合理的な維持管理に向けて現有性能の推測，補修・補強などの優先順位の決定などに役立つ有用なデータであり，本研究成果は社会的に十分意義があるものと思われる。
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