1987 Fiscal Year Final Research Report Summary
A StudyFor The Evaluation Method Of The Effective Input Ground Motion to The Structures accouning The Effects Of The Surrounding Soil Bahaviors
| Project/Area Number |
61460172
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Building structures/materials
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| Research Institution | University of Tokyo |
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Principal Investigator |
TAKANASHI Koichi Professor, Inst. of Industrial Science, University of tokyo, 生産技術研究所・第5部, 教授 (60013124)
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| Co-Investigator(Kenkyū-buntansha) |
洪 起 東京大学, 生産技術研究所・第5部, 助手 (80186600)
OHI Kenichi Lecturer, Inst. of Industrial Science, University of Tokyo, 生産技術研究所第5部, 講師 (90126003)
HONG I Research Associate, Inst. of Industrial Science, University of Tokyo
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| Project Period (FY) |
1986 – 1987
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| Keywords | Vibration generator test / Numerical simulation / On-line Test Method / Radiation damping / Internal damping / 有効入力エネルギー |
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| Research Abstract |
The purpose of this report is to clarify the dynamical characteristics of the soil ground subjected to earhtquake excitation, and to evaluate quantitatively the input energy to a frame by the ground motion accounting the effects of the surrounding soils.
Respones analysis of a test model by a computer-actuator on-line system and the following vibration generator tests were caaried out.
1. The vibration test of a footing by the vibrator installed on the surfacs footing.
2. The vibration test of a test model with the footing by the vibrator installed on the surface footing.
3. The vibration test of a footing by the vibrator installed on the embedded footing.
4. The vibration test of a test model with the footing by the vibrator installed on the embedded footing.
The test results were compared with the theoritical results. Finally, a new method to estimate the effective input energy to a frame accounting the effects of the internal damping and the radiation damping of the ground was presented.
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