Study on seismic performance, support system and frame construction of multistory frame with a long natural period and a corresponding high damping constant
| Project/Area Number |
20560454
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Sojo University |
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Principal Investigator |
KATAYAMA Takuro Sojo University, 工学部, 教授 (80310027)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAO Toshitaka 熊本大学, 工学部, 教授 (40109674)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 耐震性能 / 固有周期 / 付加減衰 / 多層骨組構造 / ローラ支承 / 減衰装置 / せん断構造 / 固有振動モード / 固定支点 / 可動支点 / 水平相対変位 |
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| Research Abstract |
Characteristics of natural mode, characteristics of additional damping and seismic performance of the proposed multistory rigid frame are investigated theoretically and experimentally. The proposed multistory rigid frame consists of fixed sub multistory rigid frame, horizontally movable sub multistory rigid frame and the top connection sub frame. By numerical analyses and vibration test by using a scale model, it was found that the fundamental natural period of the proposed frame is two times longer than that of the ordinary frame with the same number of stories and the fundamental damping constant can be effectively increased by the horizontal installation of viscous dampers. Furthermore, it was estimated that the maximum acceleration and the base shearing force of the proposed frame can decrease to at least one half of the maximum acceleration and one third of the base shearing force of the ordinary frame, respectively.
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Report
(4 results)
Research Products
(16 results)
