2009 Fiscal Year Final Research Report
A Study on Fracture-Governed Deformation Capacity of Steel Structural Members under Random Amplitudes
| Project/Area Number |
18206059
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | The University of Tokyo |
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Principal Investigator |
KUWAMURA Hitoshi The University of Tokyo, 大学院・工学系研究科, 教授 (20234635)
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| Co-Investigator(Kenkyū-buntansha) |
ITO Takumi 東京大学, 大学院・工学系研究科, 助教 (50376498)
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| Co-Investigator(Renkei-kenkyūsha) |
ITO Takumi 東京大学, 大学院・工学系研究科, 助教 (50376498)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 建築構造・材料 / 構造工学 / 耐震 / 鋼構造 / 安全性 / 破壊 / 溶接 |
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| Research Abstract |
Structural members in steel-framed buildings are susceptible to fracture during the attack of severe earthquake, as reported about the building damages in Kobe at the 1995 Hyogoken-Nambu Earthquake. The fracture possibly causes the fatal loss of safety of buildings. Earthquake motions make steel structural members experience cyclic deformations with random amplitudes, during which the fracture is triggered. In this study, pre-fracture loading cycles and deformation capacity under such random amplitudes were experimentally investigated and the evaluation methods were proposed. Applying these methods, the seismic design will be able to develop steel-framed buildings free from fracture at the future-coming events of big earthquakes.
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