| Project/Area Number |
20K14808
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 22020:Structure engineering and earthquake engineering-related
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| Research Institution | Hokkaido University |
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Principal Investigator |
DENG PENGRU 北海道大学, 工学研究院, 助教 (60825587)
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Project Status |
Discontinued (Fiscal Year 2021)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | UHPFRC / Fatigue / OSD / FEM / CT scan / Rehabilitation / Bridge deck |
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| Outline of Research at the Start |
Step 1: Propose nonlinear degradation laws for UHPFRC.
Step 2: Develop accurate numerical model for analyzing UHPFRC structures by integrating the degradation laws into nonlinear FEM.
Step 3: Optimize rehabilitation scheme for real RC bridge decks numerically through nonlinear FE analyses.
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| Outline of Annual Research Achievements |
1. Process experimental data of UHPFRC beams obtained from 4-point static flexural tests under different load speeds and ages as well as fatigue flexural tests under different stress levels.
2. Conduct FEA on the tested UHPFRC beams and fit the experimental data to obtain the material degradation law.
3. Investigate the tested specimens using NDT techniques, such as microscope and CT scan to uncover the degradation and failure mechanisms.
4. Analyze the fatigue performance of steel deck plate strengthened with UHPFRC overlay under dry and wet conditions using the degradation law obtained from Achievement 2.
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