| Project/Area Number |
22KJ0682
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| Project/Area Number (Other) |
21J22394 (2021-2022)
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Multi-year Fund (2023)
Single-year Grants (2021-2022) |
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| Section | 国内 |
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| Review Section |
Basic Section 23010:Building structures and materials-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Adnan S M Naheed 東京大学, 工学系研究科, 特別研究員(DC1)
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| Project Period (FY) |
2023-03-08 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2023: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2022: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2021: ¥800,000 (Direct Cost: ¥800,000)
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| Keywords | URM wall / Out-of-plane behavior / Dynamic shake table test / Prior in-plane damage / Numerical model / URM infill |
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| Outline of Research at the Start |
In this research to investigate the out-of-plane behavior of URM walls in RC frames considering prior in-plane failure modes we will conduct both experimental investigation an numerical model development. First we develop the model using theoretical approach and past research results. Then using the our experimenal results we will modify and calibrate the model. So that our model can simulate the dynamic behavior of URM walls in RC frame with prior in-plane damages.
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| Outline of Annual Research Achievements |
The focus of the research is to simulate the out-of-plane behavior of unreinforced masonry (URM) infills. We have completed the in-plane and out-of-plane tests on three full-scale brick URM wall in RC frame specimens. Different prior in-plane damages were applied to the specimens. Afterwards, the specimen is moved to the shaking table and incremental out-of-plane shakings are applied to the specimens until the wall collapses. A typical 6-story building in Bangladesh is analyzed under expected ground motion in Dhaka city. By conducting a dynamic analysis of the building, the excitation that will be suffered by the selected frame at the top story in the out-of-plane direction is derived. The specimens represent a frame on the top story of the prototype building. This excitation is used as the reference excitation to apply out-of-plane shaking to the specimens. Motion capture systems, lasers, and accelerometers were used for measurements during the shaking test. Using the motion capture system we could capture the overall 3D behavior of the URM walls and RC frames. We are analyzing the mechanisms of wall collapse at present. Several factors responsible for the wall collapse are being investigated.
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