Study on Fire Resistance Design of Steel Frames taking Deformation and Redundancy into account
| Project/Area Number |
23360240
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Building structures/Materials
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SUZUKI Junichi 国土技術政策総合研究所, 建築研究部, 主任研究官 (10453846)
KOHNO Mamoru 東京理科大学, 工学部, 教授 (60170205)
OZAKI Fuminobu 名古屋大学, 環境学研究科, 准教授 (40434039)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2011: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Keywords | 架構の崩壊温度 / 応力再配分 / リダンダンシー / 柱と梁の変形 / 地震後火災 / 火災応答解析 / 間仕切り壁の変形 / 強度諸元のばらつき / 限界状態設計 / 間仕切壁の変形 / 耐火被覆材の変形 |
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| Outline of Final Research Achievements |
Studies have been made on deformation of dry walls as well as variations of ultimate states of steel frames subjected to fire. First, it is found by experiment that gypsum board walls cannot follow large downward displacements of heated beams. However, although fire spreads to a larger space within the floor for the weakness of walls, the overall ultimate temperature is found to be hardly deteriorated with a few remaining stable key elements. Second, it is found analytically that variations of ultimate temperatures of steel frames in fire due to varied high temperature strengths of materials increases at rather higher temperatures greater than 600 degree Celsius.These tendencies remain unchanged when plural collapse modes compete stochastically with each other. Theoretical factors influencing the above results have also been clarified.
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Report
(5 results)
Research Products
(31 results)
